- boo⇄boo (1), noun, pl.boos,interjection, verb, booed,booing.
- boo⇄boo (2), noun.
(U.S. Slang.) marijuana. - boo⇄noun booer.
- boo⇄noun, interj. a sound made to show dislike or contempt, or to frighten.
Ex. Boos were heard from those who didn't like the concert (n.). We were frightened when he jumped out shouting, ""Boo!"" (interj.). - boo⇄v.i. to make such a sound.
- boo⇄v.t. to shout ""boo"" at.
Ex. He sang so badly that the audience booed him.