crack (n.)

1.a sudden breaking

2.the act of cracking something

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

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

5.a narrow opening"he opened the window a crack"

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

7.witty remark

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

9.a long narrow opening

10.a long narrow depression in a surface

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

crack (adj.)

1.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 (v.)

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

2.reduce (petroleum) to a simpler compound by cracking

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

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

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

6.break partially but keep its integrity"The glass cracked"

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

8.tell spontaneously"crack a joke"

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

10.suffer a nervous breakdown

11.make a sharp sound"his fingers snapped"

12.make a very sharp explosive sound"His gun cracked"

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

crack

1.a humorous anecdote or remark intended to provoke laughter"he told a very funny joke" "he knows a million gags" "thanks for the laugh" "he laughed unpleasantly at his own jest" "even a schoolboy's jape is supposed to have some ascertainable poi..."

cracking (adj.)

1.very good"he did a bully job" "a neat sports car" "had a great time at the party" "you look simply smashing"

cracking (n.)

1.the act of cracking something

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

3.the process whereby heavy molecules of naphtha or petroleum are broken down into hydrocarbons of lower molecular weight (especially in the oil-refining process)