Crevasse.
1. A long narrow opening; SYN. cleft, crevice, fissure, scissure.
2. A mark left after a small piece has been chopped or broken off of something; SYN. check, chip.
3. A usually brief attempt; SYN. fling, go, pass, whirl, offer.
4. A sudden sharp noise; SYN. cracking.
5. A purified and potent form of cocaine that is smoked rather than snorted.