crack, cleft, crevice, fissure, scissure (noun)

a long narrow opening

gap, crack (noun)

a narrow opening

"he opened the window a crack"

crevice, cranny, crack, fissure, chap (noun)

a long narrow depression in a surface

crack, cracking, snap (noun)

a sudden sharp noise

"the crack of a whip"; "he heard the cracking of the ice"; "he can hear the snap of a twig"

shot, crack (noun)

a chance to do something

"he wanted a shot at the champion"

wisecrack, crack, sally, quip (noun)

witty remark

crack (noun)

a blemish resulting from a break without complete separation of the parts

"there was a crack in the mirror"

crack, crack cocaine, tornado (noun)

a purified and potent form of cocaine that is smoked rather than snorted; highly addictive

crack, fling, go, pass, whirl, offer (noun)

a usually brief attempt

"he took a crack at it"; "I gave it a whirl"

fracture, crack, cracking (adj)

the act of cracking something

ace, A-one, crack, first-rate, super, tiptop, topnotch, top-notch, tops(p) (verb)

of the highest quality

"an ace reporter"; "a crack shot"; "a first-rate golfer"; "a super party"; "played top-notch tennis"; "an athlete in tiptop condition"; "she is absolutely tops"

crack, check, break (verb)

become fractured; break or crack on the surface only

"The glass cracked when it was heated"

crack (verb)

make a very sharp explosive sound

"His gun cracked"

snap, crack (verb)

make a sharp sound

"his fingers snapped"

crack (verb)

hit forcefully; deal a hard blow, making a cracking noise

"The teacher cracked him across the face with a ruler"

break through, crack (verb)

pass through (a barrier)

"Registrations cracked through the 30,000 mark in the county"

crack (verb)

break partially but keep its integrity

"The glass cracked"

snap, crack (verb)

break suddenly and abruptly, as under tension

"The pipe snapped"

crack (verb)

gain unauthorized access computers with malicious intentions

"she cracked my password"; "crack a safe"

crack up, crack, crock up, break up, collapse (verb)

suffer a nervous breakdown

crack (verb)

tell spontaneously

"crack a joke"

crack (verb)

cause to become cracked

"heat and light cracked the back of the leather chair"

crack (verb)

reduce (petroleum) to a simpler compound by cracking

crack (verb)

break into simpler molecules by means of heat

"The petroleum cracked"

crack (Noun)

A thin and usually jagged space opened in a previously solid material.

crack (Noun)

A narrow opening.

crack (Noun)

A sharply humorous comment; a wisecrack.

crack (Noun)

A potent, relatively cheap, addictive variety of cocaine; often a rock, usually smoked through a crack-pipe.

crack (Noun)

The sharp sound made when solid material breaks.

crack (Noun)

Any sharp sound.

crack (Noun)

An opportunity to attempt something.

crack (Noun)

vagina.

crack (Noun)

The space between the buttocks.

crack (Noun)

Conviviality; fun; good conversation, chat, gossip, or humourous storytelling; good company.

crack (Noun)

Business/events

crack (Noun)

A program or procedure designed to circumvent restrictions or usage limits on software.

crack (Noun)

a meaningful chat.

crack (Noun)

Extremely silly, absurd or off-the-wall ideas or prose.

crack (Adjective)

Highly trained and competent.

crack (Adjective)

Excellent, first-rate, superior, top-notch.

crack (Noun)

To become debilitated by psychological pressure.

crack (Noun)

To yield under interrogation.

crack (Noun)

To make a cracking sound.

crack (Noun)

To change rapidly in register.

crack (Noun)

To alternate between high and low register in the process of eventually lowering.

crack (Noun)

To make a sharply humorous comment.

crack (Noun)

To make a crack or cracks in.

crack (Noun)

To break open or crush to small pieces by impact or stress.

crack (Noun)

To strike forcefully.

crack (Noun)

To open slightly.

crack (Noun)

To cause to yield under interrogation or other pressure. (Figurative)

crack (Noun)

To solve a difficult problem.

crack (Noun)

To overcome a security system or a component.

crack (Noun)

To cause to make a sharp sound.

crack (Noun)

To tell (a joke).

crack (Noun)

To break down (a complex molecule), especially with the application of heat: to pyrolyse.

crack (Noun)

To circumvent software restrictions such as regional coding or time limits.

crack (Noun)

To open a canned beverage, or any packaged drink or food.

crack (Noun)

To brag, boast.