crack (kræk) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) |
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| —vb |
| 1. | to break or cause to break without complete separation of the parts: the vase was cracked but unbroken |
| 2. | to break or cause to break with a sudden sharp sound; snap: to crack a nut |
| 3. | to make or cause to make a sudden sharp sound: to crack a whip |
| 4. | to cause (the voice) to change tone or become harsh or (of the voice) to change tone, esp to a higher register; break |
| 5. | informal to fail or cause to fail |
| 6. | to yield or cause to yield: to crack under torture |
| 7. | (tr) to hit with a forceful or resounding blow |
| 8. | (tr) to break into or force open: to crack a safe |
| 9. | (tr) to solve or decipher (a code, problem, etc) |
| 10. | informal (tr) to tell (a joke, etc) |
| 11. | to break (a molecule) into smaller molecules or radicals by the action of heat, as in the distillation of petroleum |
| 12. | (tr) to open (esp a bottle) for drinking: let's crack another bottle |
| 13. | dialect (Scot), (Northern English) (intr) to chat; gossip |
| 14. | informal (tr) to achieve (esp in the phrase crack it) |
| 15. | informal (Austral) (tr) to find or catch: to crack a wave in surfing |
| 16. | informal crack a smile to break into a smile |
| 17. | informal (Austral), (NZ) crack hardy, crack hearty to disguise one's discomfort, etc; put on a bold front |
| 18. | informal crack the whip to assert one's authority, esp to put people under pressure to work harder |
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| —n |
| 19. | a sudden sharp noise |
| 20. | a break or fracture without complete separation of the two parts: a crack in the window |
| 21. | a narrow opening or fissure |
| 22. | informal a resounding blow |
| 23. | a physical or mental defect; flaw |
| 24. | a moment or specific instant: the crack of day |
| 25. | a broken or cracked tone of voice, as a boy's during puberty |
| 26. | informal (often foll by at) an attempt; opportunity to try: he had a crack at the problem |
| 27. | slang a gibe; wisecrack; joke |
| 28. | slang a person that excels |
| 29. | dialect (Scot), (Northern English) a talk; chat |
| 30. | slang a processed form of cocaine hydrochloride used as a stimulant. It is highly addictive |
| 31. | informal chiefly (Irish) Also: craic fun; informal entertainment: the crack was great in here last night |
| 32. | obsolete, slang a burglar or burglary |
| 33. | crack of dawn |
| | a. the very instant that the sun rises |
| | b. very early in the morning |
| 34. | informal a fair crack of the whip a fair chance or opportunity |
| 35. | crack of doom doomsday; the end of the world; the Day of Judgment |
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| —adj |
| 36. | slang (prenominal) first-class; excellent: a crack shot |
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| [Old English cracian; related to Old High German krahhōn, Dutch kraken, Sanskrit gárjati he roars] |