crack

a long narrow opening

a narrow opening; "he opened the window a crack"

a long narrow depression in a surface

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

a chance to do something; "he wanted a shot at the champion"

witty remark

a blemish resulting from a break without complete separation of the parts; "there was a crack in the mirror"

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

a usually brief attempt; "he took a crack at it"; "I gave it a whirl"

the act of cracking something

become fractured; break or crack on the surface only; "The glass cracked when it was heated"

make a very sharp explosive sound; "His gun cracked"

make a sharp sound; "his fingers snapped"

hit forcefully; deal a hard blow, making a cracking noise; "The teacher cracked him across the face with a ruler"

pass through (a barrier); "Registrations cracked through the 30,000 mark in the county"

break partially but keep its integrity; "The glass cracked"

break suddenly and abruptly, as under tension; "The pipe snapped"

gain unauthorized access computers with malicious intentions; "she cracked my password"; "crack a safe"

suffer a nervous breakdown

tell spontaneously; "crack a joke"

cause to become cracked; "heat and light cracked the back of the leather chair"

reduce (petroleum) to a simpler compound by cracking

break into simpler molecules by means of heat; "The petroleum cracked"

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"