conk

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The head.
2. n. A blow, especially on the head.
3. n. Chiefly British The human nose.
4. v. To hit, especially on the head.
5. v. To stop functioning; fail: The engine conked out on the final lap.
6. v. To fall asleep, especially suddenly or heavily: conked out on the couch watching television.
7. v. To pass out; faint.
8. v. To die.
9. n. A hard, shelflike, spore-bearing structure of certain wood-decaying fungi, found on stumps, logs, or trees.
10. n. A hairstyle in which the hair is straightened, usually by chemical means. Also called process¹.
11. v. To straighten (tightly curled hair) usually by chemical means.

Century Dictionary and Cyclopedia

1. n. A confidential chat.
2. n. The head.
3. n. The nose.
4. n. In botany, a tough, leathery, or woody fungus, especially Trametes pini, whose fruiting bodies are bracket-like in form and occur upon the trunks of trees, producing a decay of the timber.

Wiktionary

1. n. mycology The shelf- or bracket-shaped fruiting body of a Bracket fungus (A.K.A. Shelf fungus), i.e., a mushroom growing off a tree trunk.
2. n. slang A nose, especially a large one.
3. n. alternative spelling of conch.
4. v. slang To hit, especially on the head.
5. v. To chemically straighten tightly curled hair.

GNU Webster's 1913

1. n. slang the head.
2. n. slang a blow to the head.
3. v. slang to hit on the head.

WordNet 3.0

1. v. pass out from weakness, physical or emotional distress due to a loss of blood supply to the brain
2. v. come to a stop
3. n. informal term for the nose
4. v. pass from physical life and lose all bodily attributes and functions necessary to sustain life
5. v. hit, especially on the head