1. (n.) A dunce; a stupid fellow.

2. (n.) A swimming bird (Sula fiber or S. sula) related to the common gannet, and found in the West Indies, nesting on the bare rocks. It is so called on account of its apparent stupidity. The name is also sometimes applied to other species of gannets; as, S. piscator, the red-footed booby.

3. (n.) A species of penguin of the Antarctic seas.

4. (a.) Having the characteristics of a booby; stupid.

also-ran asshole bag boob boobs bosom breast breasts brisket bust chest chump crop defeatee ding-a-ling dingbat dingdong dolt dolthead duck dug fall guy fathead galoot game loser good loser good sport goof jerk jerk-off klutz knockers loser mama mamelon mamelonation mammary gland mammilla mammillation mutt nenes nipple oak pap papilla pigeon breast prize sap sap saphead sawney schlemiel sport stooge teat the vanquished thorax tit tits titties titty udder underdog victim