boob n 1: an ignorant or foolish person [syn: {dumbbell}, {dummy}, {dope}, {booby}, {pinhead}] 2: either of two soft fleshy milk-secreting glandular organs on the chest of a woman [syn: {breast}, {bosom}, {knocker}, {tit}, {titty}] boob v : commit a faux pas or a fault or make a serious mistake; "I blundered during the job interview" [syn: {sin}, {blunder}, {goof}]