Crack

verb

1. to make a very sharp explosive sound
2. to strike with a sharp noise : rap
3. to open (something, such as a bottle) for drinking
4. to open (a book) for studying
5. to puzzle out and expose, solve, or reveal the mystery of
6. to break into
7. to open slightly
8. to break through (something, such as a barrier) so as to gain acceptance or recognition
9. to show or begin showing (a smile) especially reluctantly or uncharacteristically
10. to impair seriously or irreparably : wreck, disrupt
11. to destroy the tone of (a voice)
12. to break, split, or snap apart
13. to interrupt sharply or abruptly
14. to cause to make a sharp noise
15. to subject (hydrocarbons) to cracking
16. to produce by cracking
17. to break up (chemical compounds) into simpler compounds by means of heat
18. fail: such as
19. to lose control or effectiveness under pressure
20. to fail in tone
21. to go or travel at good speed
22. to break so that fissures appear on the surface
23. to break with a sudden sharp sound
24. to tell especially suddenly or strikingly