/ Dictionary / Index B boo-boo: Meaning and Definition of Find definitions for: boo-boo Pronunciation: (b'b"), [key] — pl. -boos. a stupid or silly mistake; blunder. a minor injury. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: boo-boo (Thesaurus) booboisie boobook Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language