from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Informal A stupid person; a dunce.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Someone who is stubborn, thick-skulled, and stupid.
from the GNU version of the Collaborative International Dictionary of English
- n. a person of low intelligence; a dunce; a blockhead; -- used deprecatingly to express a low opinion of someone's intelligence or capabilities.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a stupid person; these words are used to express a low opinion of someone's intelligence
bone + head (Wiktionary)