A what?

11 common objects that are never called by their proper names

While we typically go about life describing the end of our shoelaces as ‘the end of the shoelace’ or the whites of the egg as ‘egg whites’, these things, and many more, have names of their own, even if they are not always widely known or used. Let’s have a look at 11 common things that have proper names, even if no one uses them.

The little plastic or metal tip at the end of shoelaces or drawstrings is there to prevent the fibres from fraying, and to make it easier to pass the lace or drawstring through a hole. Its proper name is ‘aglet’, from the French aguillette, meaning ‘needle’, a reference to its use in helping to thread the string through the hole.

Erasers at the end of wooden pencils are not usually glued together, but they are instead held together by a little metal band. This band is called a ‘ferrule’—from Medieval Latin viriola or ‘little bracelet’—and the term can be used for any metal band that strengthens or fastens a joint, such as those used in handles, to hold brush bristles, or to secure a connection between two cables.

The ‘little plastic table on the pizza’ is quite a long name for something aptly named ‘pizza saver’, but no one seems to really care. It was invented in 1974 by an Argentine pizza maker, who named it SEPI or separador de pizza (‘pizza separator’). In America, it was patented as a ‘package saver’ in 1985, though it was later renamed ‘pizza saver’.

Most mathematical symbols have proper names that are not regularly used, and the division sign is no exception. It was officially introduced into mathematics as a symbol of division in 1659 by the Swiss mathematician Johann Rahn in his influential work Teutsche Algebra. This sign is called an ‘obelus’, from the Greek obelos, meaning ‘sharpened stick’ or ‘skewer’, as it was initially used as a pointer for questionable passages in a text.

Paper cups and their corresponding cardboard sleeves to protect our hands from the heat or the cold are relatively new, but their proper names are not—at least, the name for the cardboard sleeve. This holder is called a ‘zarf’, an Arabic (zuruuf) and Turkish (zarflar) word used for ornamented cup holders, usually made from metal. The materials and the details of the zarf have changed, but the purpose still remains.

Do we need a more technical term than ‘armhole’ for a hole meant for an arm to go through? Maybe not, but the technical term still exists. An ‘armscye’ (pronounced arm-sigh) is the proper term used in sewing and patterns to describe the opening on a garment where the sleeve is attached. The word is a compound of ‘arm’ + scye, a Scots word meaning ‘opening’. So, in the end, ‘armscye’ just means ‘armhole’.

We often use the words ‘railing’ or ‘handrail’ when talking about a staircase, but these terms only describe the top portion of it, not the pillars that support the handrail. The pillars and the rail altogether are called a ‘banister’, a corruption of the word baluster, derived from the Italian balaustro. The term originally was used for the pillars, but eventually came to mean the entire structure.

Not all beverage foams are equal. The foam on top of alcoholic beverages, in particular, is called ‘barm’, a term derived from Old English beorma, meaning ‘yeast’ or ‘leaven’, and it's mainly used for the effervescence of fermented liquors such as beer, ale, or wine.

Did you know that the white (or clear) part of the egg is called the ‘albumen’? The term entered English as a loan from Latin, where _albumen_—from albus, ‘white’—was used in the same way. Though it is not widely used in everyday life, it’s still the correct term for that part of the egg.

As a rule of thumb, you should always assume that all marks, symbols, and strokes in calligraphy have a proper name, even if it's not often used. When it comes to the lowercase letters ‘j’ and ‘i ’, the little dot on top is not a dot, but a ‘tittle’. This name comes from the Latin _titulus_—meaning ‘title’, ‘inscription’, or ‘small mark’—and was initially used by scribes to distinguish these letters in their cramped writing.

If you ever got lost in the mall or the museum, you must have come across a map that marked your location using an arrow or a pointer, usually accompanied by the phrase ‘you are here’. Well, that pointer is called an ‘ideolocator’, a combination of the Greek idea, a ‘mental image, concept, or visual representation’ (in this case, the pointer), and the Latin locatus, meaning ‘to place’ (the specific location on the map). For the sake of convenience, we will keep calling it the ‘you are here’ sign.

Decoding

Being a "treasured guest" is not a compliment. This is the hidden meaning

Have you ever heard "Code Adam" while shopping for groceries at Walmart? Or maybe you’ve heard how "Dr. Firestone" was being paged during a routine hospital visit. They sound like harmless announcements. But behind these ordinary words are secret codes staff use to signal emergencies without causing panic. From hospitals and supermarkets to airports and Disney Parks, these phrases quietly warn employees that something is happening. You hope you never hear them, but if you do, it helps to know exactly what they mean.

We all love getting special attention at airports or hotel desks, but if you hear the clerk call you a "treasured guest," don’t feel so flattered. You may not be as VIP as one could think.

In the hospitality industry, "treasured guest" has become a humorous bit of industry folklore to describe someone causing trouble. Maybe a customer yelling at staff over expired coupons, demanding impossible accommodations, or throwing a full-blown tantrum at the front desk. Whatever it is, the phrase has become the staff’s secret way to warn co-workers without escalating the situation in front of the customers. Most guests don’t realize the meaning, but once you know it, you may start hearing it more often. We just hope it’s not about you.

Imagine you’re pushing a shopping cart through Walmart when suddenly the overhead speaker announces, "Code Adam." You can easily assume it’s some kind of employee meeting or cleanup request. But when you see them start locking the exits and moving around, you know something’s wrong.

This code was created in 1994 by Walmart in collaboration with the National Center for Missing & Exploited Children (NCMEC), in memory of the tragic case of 6-year-old Adam Walsh. Adam was abducted from a Sears department store in 1981 while shopping with his mother. His father, John Walsh, later became famous for hosting the TV program America’s Most Wanted and advocating for missing children. Even if Adam’s story ended in tragedy, Walmart created the emergency system in Adam’s memory, and other retailers soon adopted it nationwide, intending to have a quick response to missing or abducted children.

You’re sitting in a hospital waiting room during a routine check-up when you suddenly hear "Code Blue, Room 214." Most people immediately know it sounds serious, even if they are not entirely sure why.

The phrase "Code Blue" is used at hospitals to draw the necessary staff and equipment to perform a resuscitation. It was created in the early 1960s at Beathany Medical Center by Dr. Hughes Day. Before then, hospital resuscitations were often chaotic and poorly coordinated. In 1961, Dr. Day received a grant to build one of America’s first cardiac care centers, and he developed both the Code Blue alert system and the modern crash cart to improve survival rates during cardiac emergencies. Today, the system is used in hospitals across the country, sometimes with specialized versions like "Code Blue Pediatric" or "Code Blue Neonate."

Imagine visiting a loved one in the hospital when the intercom calmly announces, "Paging Dr. Firectone to the third floor." Your head surely goes, "Dr. Firestone’s probably having a busy day up there." He is, but it’s not what you think.

The phrase is actually a discreet fire alert used to warn staff about smoke, flames, or overheating equipment without frightening patients and visitors. Hospitals adopted these coded announcements after realizing that openly yelling "fire" over loudspeakers could create panic, especially among patients who aren’t able to move quickly. "Code Red" is an alternative used by many health centers today, but it also hints at the situation while keeping hallways calm.

You’re standing at a checkout counter when the cashier picks up the phone and quietly says, "I need a Code 10 authorization." If you think that’s just another way to get a supervisor’s approval or technical issue, think again. In reality, the cashier may suspect the credit card is stolen or fraudulent.

Code 10 was developed through a cooperative effort between major credit card companies like Visa and Mastercard, along with international standard organizations. As credit cards became more common in the 1960s and 1970s, stores needed a discreet way to alert banks about suspicious activity without directly accusing customers and potentially putting employees at danger. When a cashier requests a Code 10, the bank’s operator begins asking yes-or-no questions to assess the situation and guide the employee on what to do next.

You’ve probably experienced those long airport security lines. The wait is usually uneventful. But sometimes, you can hear "Code Bravo" over the speakers. Maybe it’s a delay, or maybe it’s an issue with luggage. Within seconds, people stop moving, the security line freezes, and exits may even close. It’s something bigger.

Code Bravo is the emergency phrase used by airport security and the Transportation Security Administration to signal a serious security threat, such as an unattended bag, a breach at a checkpoint, or someone slipping into a restricted area. The term comes from the international phonetic alphabet used in aviation and military communications, where "Bravo" represents the letter B. When this is called, security staff immediately lock down affected areas, stop screening lines, and search for the source of the threat. To passengers, it’s sudden and confusing, but to security, it’s a carefully rehearsed response.

You are heading back to your cabin on a cruise ship when the speakers announce, "Code Alpha, Deck 7." You may think Alpha is related to the captain, but that’s not the case. It means someone on board is suffering a medical emergency.

The phrase comes from the NATO phonetic alphabet, where "Alpha" represents the letter A. In maritime emergency jargon, it became shorthand for a Priority A medical situation requiring immediate response. Cruise lines such as Royal Caribbean and Disney Cruise Line commonly use the term, though some ships use variations like repeating "Alpha" three times. Once the code is announced, onboard medical teams rush toward the specified deck or cabin. If necessary, stretcher crews are mobilized, and in severe cases, the ship may even divert course toward the nearest port for emergency evacuation. Passengers are enjoying the views, but the staff is running to save a life.

Anyone who remembers the CB radio craze of the 1970s probably smiles when they hear "10-4." Movies, truckers, and radio fans turned those number codes into a part of American culture. So if you overhear "10-33" on a police scanner, you might assume it’s just another routine message. But it’s not as simple as it sounds.

The 10-code system was first created in 1937 by Illinois State Police communications director Charles Hopper and later standardized by the Association of Public Safety Communications Officials, better known as APCO. Officers needed short phrases they could understand clearly over crackling radio signals. The 10-33 code commonly means an officer needs emergency assistance. In some departments, it also signals radio silence so dispatchers can focus on the crisis unfolding in real time.

Disney World is amazing, the parks offer something for everyone, and there are things to see wherever you look. But that’s exactly the kind of place where a child can easily disappear into a sea of strollers, balloons, characters, and crowds. For that reason, Disney has developed the "Signal 70," which alerts cast members and security that a child has become separated from their family.

The number comes from older police and emergency radio systems, where "70" was commonly associated with missing persons. Disney adopted the phrase because it allows employees to communicate discreetly without frightening or alarming nearby guests. If a member finds the child, they gently -and magically- escort them to Baby Care Center, where they coordinate the reunion.

Cruises are great to relax, enjoying a good book under the sun with a nice drink by the side. Until you hear "Echo, echo, echo" on the speakers. If you do, something is happening somewhere else on the ship.

The code is used among cruise employees to signal that dangerous winds or a navigational hazard are affecting the ship. It comes from the international maritime phonetic alphabet, where "Echo" stands for the letter E. In maritime signalling, the letter traditionally means "I am altering my course to starboard." And, in time, the phrase became associated with urgent ship maneuvers and weather-related warnings. However urgent, the repetition of the word by three doesn’t represent life-threatening situations. It alerts the crew of a certain hazard to prepare while avoiding panic among passengers.