boob
noun /buːb/
/buːb/
- (slang) a woman’s breast
- (British English, informal) a stupid mistake
- I made a bit of a boob deleting that file.
- (North American English) a stupid person
Word Originnoun senses 2 to 3 early 20th cent.: abbreviation of booby ‘stupid person’. noun sense 1 1950s (originally US): abbreviation of booby ‘woman's breast’, from dialect bubby, of uncertain origin; perhaps related to German dialect Bübbi ‘teat’.