boo-boo - definition of boo-boo by The Free Dictionary
boo-boo also boo·boo (bo o′bo o) n. pl. boo-boos also boo·boos Informal 1. A slight physical injury, such as a scratch. 2. A stupid mistake; a blunder. [Perhaps alteration of boohoo, to weep noisily.] boo-boo n, pl-boos 1. an embarrassing mistake; blunder...