Synonym: bang, blow, break, noise, open, shot, slit, split. Similar words: rack, meritocracy, track, track down, craft, crawl, crash, scratch. Meaning: [kræk] 
n. 1. a long narrow opening 2. a narrow opening 3. a long narrow depression in a surface 4. a sudden sharp noise 5. a chance to do something 6. witty remark 7. a blemish resulting from a break without complete separation of the parts 8. a purified and potent form of cocaine that is smoked rather than snorted 9. a usually brief attempt 10. the act of cracking something. v. 1. become fractured; break or crack on the surface only 2. make a very sharp explosive sound 3. make a sharp sound 4. hit forcefully; deal a hard blow, making a cracking noise 5. pass through (a barrier) 6. break partially but keep its integrity 7. break suddenly and abruptly, as under tension 8. suffer a nervous breakdown 9. tell spontaneously 10. cause to become cracked 11. reduce (petroleum) to a simpler compound by cracking 12. break into simpler molecules by means of heat. adj. of the highest quality.
n. 1. a long narrow opening 2. a narrow opening 3. a long narrow depression in a surface 4. a sudden sharp noise 5. a chance to do something 6. witty remark 7. a blemish resulting from a break without complete separation of the parts 8. a purified and potent form of cocaine that is smoked rather than snorted 9. a usually brief attempt 10. the act of cracking something. v. 1. become fractured; break or crack on the surface only 2. make a very sharp explosive sound 3. make a sharp sound 4. hit forcefully; deal a hard blow, making a cracking noise 5. pass through (a barrier) 6. break partially but keep its integrity 7. break suddenly and abruptly, as under tension 8. suffer a nervous breakdown 9. tell spontaneously 10. cause to become cracked 11. reduce (petroleum) to a simpler compound by cracking 12. break into simpler molecules by means of heat. adj. of the highest quality. 
Random good picture Not show
(121) She opened the door just a crack to listen to the conversation.
(122) He said he didn't know how to swim but would take a crack at it.
(123) We were two months behind schedule, so I decided it was time to crack the whip.
(124) There's a crack in the fence big enough to look through.
(125) You can find out how to crack any kind of software on the web.
(126) There's a large crack where the ceiling meets the wall.
(127) I was dusting the mantelpiece when I noticed a crack.
(128) There was a deep crack in the ceiling above him.
(129) You can rely on him to crack a joke when things get tense in the office.
(130) If you go on working like this you're bound to crack up sooner or later.
(131) He's a person who enjoys a drink and a bit of crack.
(132) I often start work at the crack of dawn when there is a big order to get out.
(133) If we crack on with the painting we should finish it today.
(134) The new paint is already starting to crack and peel.
(135) He went to the door, opened it a crack(sentencedict.com), and listened.
(136) It took them nearly two months to crack the code .
(137) This new evidence could help detectives to crack the case .
(138) Fifty police officers to arrest two unarmed men is surely a case of using a sledgehammer to crack a nut.
(139) He noticed the crack in her voice as she tried to continue.
(140) Living in this goldfish bowl of publicity would crack the strongest marriage.
(141) A huge crack went from the top to the bottom of the wall.
(142) Every minute or so I could hear a snap,(http://sentencedict.com) a crack and a crash as another tree went down.
(143) The vacuum flask has a strong casing, which won't crack or chip.
(144) She's calm and strong, and she is just not going to crack.
(145) He could see them through a crack in the door.
(146) You can crack this toughened glass, but you can't break it.
(147) Crack three eggs into a bowl and mix them together.
(148) Kabul resounded to the crack of Kalashnikov fire and a flood of artillery.
(149) The crack in the wall is caused by the ground settling.
(150) Several European governments have pledged to work together to crack down on child pornography and sex tourism.