crack

noun

1.
a long narrow cleft
cleft crevice fissure scissure
Derived from:
crack
2.
a narrow opening
gap
3.
a long narrow depression in a surface
clough geo chap cranny crevice fissure
4.
a sudden sharp noise
cracking snap
5.
a chance to do something
shot
6.
witty remark
quip sally wisecrack
Derived from:
crack
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; highly addictive
hard crack cocaine tornado
9.
10.
the act of cracking something
cracking fracture