1. in. to accept a deception; to fall for something; to respond to a come-on. We put up a sign advertising free pop, but nobody bit.
2. in. [for someone or something] to be bad or threatening. My dad bites, but don’t worry, he’s in a good mood.
3. in. to be irritating. (More severe than to suck, as in It sucks.) This party bites. Sko.
4. tv. to copy something without permission; to steal something. Sue bit a copy of my term paper, and I almost got in trouble.