Definition of jockstrap noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈdʒɒkstræp//
; NAmE NAmE//ˈdʒɑːkstræp//
(also athletic supporter especially in North American English)
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a piece of men’s underwear worn to support or protect the sexual organs while playing sports Word Originlate 19th cent.: from slang jock ‘genitals’ (of unknown origin) + strap.
See the Oxford Advanced American Dictionary entry: jockstrap