from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Informal One that is bad, especially a villain or criminal.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A person of bad character in a work of fiction; in a western he will typically wear a black hat.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the principal bad character in a film or work of fiction
corruption of bad + guy (Wiktionary)