Pronunciation: (klungk), [key]
1. to hit hard, esp. on the head.
2. clonk (def. 2).
1. a hard hit, esp. on the head.
2. Informal.a stupid person; clunkhead.
3. clonk (def. 1).
4. Informal.clunker (def. 2)
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.