Words of the trade

Craftsman’s slang: 12 everyday expressions with curious origins

The repetitive actions of each craft have spawned terms, idioms, and phrases that make up their particular tech lingo. Many of these expressions have transcended their natural realm to become a part of the universal language. These once-practical expressions now live on as reminders of how deeply language is tied to human work, skill, and invention. Take a look at these 12 everyday expressions and wonder at their unassuming origins.

In early silent films, long, dull scenes often tested audiences’ patience. Editors and directors learned to "cut to the chase," meaning skip the filler and jump straight to the excitement, often a chase scene.

Over time, the phrase escaped the editing room. Today, when someone uses it in conversation, they’re simply asking you to get to the point and drop the buildup.

Before precise measuring tools were widespread, carpenters, brewers, and other craftspeople were often said to have used their thumbs for rough estimates. The width or length of a thumb served as an informal "rule."

Although modern workers rely on rulers and scales, the old phrase remains alive, meaning a general principle or handy guideline rather than a strict rule.

Guild members and early tradespeople often followed written manuals that dictated how to perform their craft. Working "by the book" meant adhering to these official rules exactly.

Today, the phrase describes anyone who sticks strictly to regulations, whether it’s a police officer enforcing the law or a student obeying classroom rules.

On old warships, heavy cannons were secured with chains. If a storm or battle broke those chains, a "loose cannon" could roll violently across the deck, crushing sailors and damaging the ship.

In modern speech, it labels an unpredictable person: someone whose uncontrolled actions can endanger a team, project, or reputation.

Tailors once worked from large pieces of fabric, cutting pieces for multiple garments. If two suits were cut from the same cloth, they shared identical material and quality.

Today, we use the expression to describe people with similar traits or values, like friends, relatives, or colleagues who clearly come from the same "fabric."

Sailors and rope-makers often spent long hours twisting fibers into rope, a process known as spinning yarn. To keep themselves entertained, they told tall stories while working.

Thus, to "spin a yarn" came to mean weaving an elaborate tale. It’s still used for anyone who tells a long, colorful story, whether it’s true or not.

A blacksmith must hammer metal quickly once it’s heated to the right glow; wait too long, and it hardens. The saying advised workers to act fast for the best results.

It evolved into a general reminder to seize opportunities as quickly as they arise, while conditions are favorable and momentum is on your side.

Naval ships sometimes flew false flags to mislead enemies, then hoisted their actual national colors before engaging in battle. Revealing one’s "true colors" meant honesty after disguise.

Now the phrase praises sincerity or exposes deceit, depending on context. It still evokes that dramatic moment when masks fall away.

Before electric bulbs, theaters used lime burned with gas to produce a brilliant white light that spotlighted leading actors on stage.

Those performers quite literally stood "in the limelight." Today, the phrase simply means being the center of attention, whether on stage or in everyday life.

Before modern anesthesia, wartime surgeons had soldiers bite a bullet to cope with agony during operations. The metal gave them something firm to clamp down on.

Today, "bite the bullet" means facing a tough task bravely, accepting pain or difficulty with stoic resolve rather than avoiding it.

Sailors and soldiers in drills stood with their toes exactly on a marked line to show discipline and precision.

The phrase came to represent strict obedience to orders or standards. When someone "toes the line," they conform carefully to expected behavior.

In sword fighting, the combatant whose hand was positioned higher typically had greater reach and control. Gaining "the upper hand" meant securing an advantage over an opponent.

Today, the duel may be metaphorical: winning an argument, negotiation, or competition, but the sense of dominance remains the same.

Everybody loves a good sleep

Why do we "sleep tight"? 12 sleep-related idioms explained

Have you ever uttered the words "sleep tight" or "hit the hay" before going to bed? These phrases have existed for ages, but their meanings and origins are not always apparent. Some are directly related to sleeping, while others are metaphors for entirely different things. Take a look at 12 of these idioms. Do you use any of them?

"Sleep tight" is a phrase most people know from the bedtime verse: "Sleep tight, don’t let the bedbugs bite". It’s often claimed to come from the old practice of tightly tying ropes on bed frames to keep mattresses firm and comfortable. This helped prevent sagging and made for a better night’s sleep.

In older English, "tight" simply meant "soundly" or "well", making "sleep tight" a wish for a good night’s sleep.

"Hit the hay" dates back to the late 19th or early 20th century and is often linked to the practice of stuffing hay into sacks or mattresses for sleeping, which is also commonly cited as an explanation for the phrase "hit the sack."

Another theory suggests that farm workers sometimes slept directly in haystacks, making "hay" a stand-in for "bed." Because "hit the hay" appears in print slightly earlier than "hit the sack," some believe it may have come first.

Anyone who has had a newborn knows how strange the phrase "sleep like a baby" sounds: babies wake up often and cry! Yet, the idiom means to sleep peacefully and deeply.

The idea is that when babies do sleep, they’re completely at ease, with no worries to disturb them. That peaceful, undisturbed state is what the phrase refers to, even if it doesn’t match the full reality.

"Let sleeping dogs lie" might sound odd at first, but its meaning becomes clear with a bit of explanation. It’s a warning to leave past issues alone, especially sensitive ones.

The phrase compares old disputes to sleeping dogs: if you wake them, they might react aggressively. Similarly, revisiting old problems can stir up trouble best left alone.

A "catnap" is a short, light nap, usually under 30 minutes, during which you do not enter deep sleep. Studies suggest that even a 10-minute nap can be refreshing, sometimes nearly as effective as a longer one, though the ideal length varies by person.

The term comes from cats’ daytime sleep habits. Since wild cats had to stay alert for danger, they took quick, light naps. Today’s cats do the same, snoozing lightly throughout the day, just like a good catnap.

"Waking up on the wrong side of the bed" means starting the day in a bad mood. The phrase comes from an old Roman superstition.

Romans, including Augustus Caesar, believed getting up on the left, or sinister, side brought bad luck. As a result, the "wrong side" was more than just a bad mood starter; it was thought to be a bad omen.

To "sleep like a log" means to sleep deeply and without moving, like a heavy log lying still. It’s a common way to describe a peaceful, undisturbed night.

The origin of the phrase is unclear, but some link it to lumberjacks who slept soundly after hard work. Others connect it to the similarity between snoring and the sound of sawing.

"Counting sheep" means imagining sheep jumping over a fence, one by one, to help you fall asleep. It’s a classic mental trick to quiet the mind.

The phrase likely comes from shepherds who counted their flocks at night to ensure none were missing, a repetitive and calming routine before bed.

The idiom "to lose sleep over something" means to worry about something to the point that it becomes difficult to sleep, or to be so concerned that it disrupts one’s rest.

While the exact origin of the phrase is difficult to pinpoint, it likely evolved from the idea that intense worry and stress can interfere with the body's natural sleep cycle.

To "do something in your sleep" means to do something very easily and effortlessly, usually because you have done it so many times that it's become second nature. It's a metaphorical way of saying that you are so proficient at a task that you don't even have to think about it, as if you could do it while unconscious.

"Sleep with one eye open" means staying alert or cautious, especially in risky situations. It suggests being ready for trouble, even while resting.

The phrase is often linked to animals such as dolphins and certain birds that can literally sleep with part of their brain awake to remain safe.

To "sleep around the clock" means to sleep for many hours without waking. It often happens when you're exhausted or feeling unwell. It’s a way in which the body tries to recover energy.