Dictionary definition for: Crack

1. (s) 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"

2. (v) become fractured; break or crack on the surface only; "The glass cracked when it was heated"

3. (n) a long narrow opening

4. (n) a narrow opening; "he opened the window a crack"

5. (v) make a very sharp explosive sound; "His gun cracked"

6. (v) make a sharp sound; "his fingers snapped"

7. (n) a long narrow depression in a surface

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

9. (n) a sudden sharp noise; "the crack of a whip" "he heard the cracking of the ice" "he can hear the snap of a twig"

10. (n) a chance to do something; "he wanted a shot at the champion"

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

12. (n) witty remark

13. (v) break partially but keep its integrity; "The glass cracked"

14. (n) a blemish resulting from a break without complete separation of the parts; "there was a crack in the mirror"

15. (v) break suddenly and abruptly, as under tension; "The rope snapped"

16. (n) a purified and potent form of cocaine that is smoked rather than snorted

17. (v) suffer a nervous breakdown

18. (n) a usually brief attempt; "he took a crack at it" "I gave it a whirl"

19. (v) tell spontaneously; "crack a joke"

20. (v) cause to become cracked; "heat and light cracked the back of the leather chair"

21. (n) the act of cracking something

22. (v) reduce (petroleum) to a simpler compound by cracking

23. (v) break into simpler molecules by means of heat; "The petroleum cracked"