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Related to bite off: bite someone's head off
To use the teeth to pull off something. The bitten item can be named before or after "off." We had to take the dog to the vet after he bit off and ate a piece of a questionable-looking plant. Once the lollipop was soft enough, I bit it off the stick
*bit offand *little off
a little crazy; a little out of whack. (*Typically: be ~; find someone ~.) This guy's a little off, but he is harmless.
bite something off
to remove something in a bite. Ann bit a piece off and chewed it up. She bit off a piece.