- to break without complete separation of parts; become fissured: The plate cracked when I dropped it, but it was still usable.
- to break with a sudden, sharp sound: The branch cracked under the weight of the snow.
- to make a sudden, sharp sound in or as if in breaking; snap: The whip cracked.
- (of the voice) to break abruptly and discordantly, especially into an upper register, as because of weariness or emotion.
- to fail; give way: His confidence cracked under the strain.
- to succumb or break down, especially under severe psychological pressure, torture, or the like: They questioned him steadily for 24 hours before he finally cracked.
- Chemistry. to decompose as a result of being subjected to heat.
- Chiefly South Midland and Southern U.S. to brag; boast.
- Chiefly Scot. to chat; gossip.
- to cause to make a sudden sharp sound: The driver cracked the whip.
- to break without complete separation of parts; break into fissures.
- to break with a sudden, sharp sound: to crack walnuts.
- to strike and thereby make a sharp noise: The boxer cracked his opponent on the jaw.
- to induce or cause to be stricken with sorrow or emotion; affect deeply.
- to utter or tell: to crack jokes.
- to cause to make a cracking sound: to crack one's knuckles.
- to damage, weaken, etc.: The new evidence against him cracked his composure.
- to make mentally unsound.
- to make (the voice) harsh or unmanageable.
- to solve; decipher: to crack a murder case.
- Informal. to break into (a safe, vault, etc.).
- Chemistry. to subject to the process of cracking, as in the distillation of petroleum.
- Informal. to open and drink (a bottle of wine, liquor, beer, etc.).
- a break without complete separation of parts; fissure.
- a slight opening, as between boards in a floor or wall, or between a door and its doorpost.
- a sudden, sharp noise, as of something breaking.
- the snap of or as of a whip.
- a resounding blow: He received a terrific crack on the head when the branch fell.
- Informal. a witty or cutting remark; wisecrack.
- a break or change in the flow or tone of the voice.
- Informal. opportunity; chance; try: Give him first crack at the new job.
- a flaw or defect.
- Also called rock. Slang. pellet-size pieces of highly purified cocaine, prepared with other ingredients for smoking, and known to be especially potent and addicting.
- Masonry. check1(def 41).
- a mental defect or deficiency.
- a shot, as with a rifle: At the first crack, the deer fell.
- a moment; instant: He was on his feet again in a crack.
- Slang. a burglary, especially an instance of housebreaking.
- Chiefly British. a person or thing that excels in some respect.
- Slang: Vulgar. the vulva.
- Chiefly Scot. conversation; chat.
- British Dialect. boasting; braggadocio.
- Archaic. a burglar.
- first-rate; excellent: a crack shot.
- with a cracking sound.
- crack down, to take severe or stern measures, especially in enforcing obedience to laws or regulations: The police are starting to crack down on local drug dealers.
- crack off, to cause (a piece of hot glass) to fall from a blowpipe or punty.
- crack on, Nautical.
- (of a sailing vessel) to sail in high winds under sails that would normally be furled.
- (of a power vessel) to advance at full speed in heavy weather.
- crack up, Informal.
- to suffer a mental or emotional breakdown.
- to crash, as in an automobile or airplane: He skidded into the telephone pole and cracked up.
- to wreck an automobile, airplane, or other vehicle.
- to laugh or to cause to laugh unrestrainedly: That story about the revolving door really cracked me up. Ed cracked up, too, when he heard it.
- crack a book, Informal. to open a book in order to study or read: He hardly ever cracked a book.
- crack a smile, Informal. to smile.
- crack wise, Slang. to wisecrack: We tried to be serious, but he was always cracking wise.
- fall through the cracks, to be overlooked, missed, or neglected: In any inspection process some defective materials will fall through the cracks.Also slip between the cracks.
- get cracking, Informal.
- to begin moving or working; start: Let's get cracking on these dirty dishes!
- to work or move more quickly.
Origin of crack
- (intr) to break into pieces
- (intr) informal to undergo a physical or mental breakdown
- (tr) informal to present or report, esp in glowing termsit's not all it's cracked up to be
- informal, mainly US and Canadian to laugh or cause to laugh uproariously or uncontrollably
- informal a physical or mental breakdown
- to break or cause to break without complete separation of the partsthe vase was cracked but unbroken
- to break or cause to break with a sudden sharp sound; snapto crack a nut
- to make or cause to make a sudden sharp soundto crack a whip
- to cause (the voice) to change tone or become harsh or (of the voice) to change tone, esp to a higher register; break
- informal to fail or cause to fail
- to yield or cause to yieldto crack under torture
- (tr) to hit with a forceful or resounding blow
- (tr) to break into or force opento crack a safe
- (tr) to solve or decipher (a code, problem, etc)
- (tr) informal to tell (a joke, etc)
- to break (a molecule) into smaller molecules or radicals by the action of heat, as in the distillation of petroleum
- (tr) to open (esp a bottle) for drinkinglet's crack another bottle
- (intr) Scot and Northern English dialect to chat; gossip
- (tr) informal to achieve (esp in the phrase crack it)
- (tr) Australian informal to find or catchto crack a wave in surfing
- crack a smile informal to break into a smile
- crack hardy or crack hearty Australian and NZ informal to disguise one's discomfort, etc; put on a bold front
- crack the whip informal to assert one's authority, esp to put people under pressure to work harder
- a sudden sharp noise
- a break or fracture without complete separation of the two partsa crack in the window
- a narrow opening or fissure
- informal a resounding blow
- a physical or mental defect; flaw
- a moment or specific instantthe crack of day
- a broken or cracked tone of voice, as a boy's during puberty
- (often foll by at) informal an attempt; opportunity to tryhe had a crack at the problem
- slang a gibe; wisecrack; joke
- slang a person that excels
- Scot and Northern English dialect a talk; chat
- slang a processed form of cocaine hydrochloride used as a stimulant. It is highly addictive
- Also: craic informal, mainly Irish fun; informal entertainmentthe crack was great in here last night
- obsolete, slang a burglar or burglary
- crack of dawn
- the very instant that the sun rises
- very early in the morning
- a fair crack of the whip informal a fair chance or opportunity
- crack of doom doomsday; the end of the world; the Day of Judgment
- (prenominal) slang first-class; excellenta crack shot
Word Origin and History for crack up
"split, opening," 14c., from crack (v.). Meaning "try, attempt" first attested 1836, probably a hunting metaphor, from slang sense of "fire a gun." Meaning "rock cocaine" is first attested 1985. The superstition that it is bad luck to step on sidewalk cracks has been traced to c.1890. Adjectival meaning in "top-notch, superior" is slang from 1793 (e.g. a crack shot).
Idioms and Phrases with crack up
Suffer an emotional breakdown, become insane, as in He might crack up under the strain. This usage alludes to the result of cracking one's skull; from the early 1600s to crack alone was used in this way. [Slang; early 1900s]
Damage or wreck a vehicle or vessel. For example, I'm always afraid that I'll crack up the car.
Experience a crash, as in We cracked up on the freeway in the middle of the ice storm.
Also, crack someone up. Burst or cause to burst out laughing, as in The audience cracked up, or That joke really cracked me up. [Slang; c. 1940] Also see break up, def. 6. All of these expressions derive from crack in the sense of “break into pieces” or “collapse,” a usage dating from the late 1600s. Also see cracked up.
In addition to the idioms beginning with crack
- crack a book
- crack a bottle
- crack a joke
- crack a smile
- crack down
- cracked up
- crack of dawn
- crack the whip
- crack up
- by jove (cracky)
- fall between the cracks
- get cracking
- hard nut to crack
- have a crack at
- make a crack
- not all it's cracked up to be
- paper over (the cracks)