from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Vulgar Slang An inept, foolish, or contemptible person.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A stupid or contemptible person.
- n. A card game, the aim of which is to lose one's cards
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
shit + head (Wiktionary)