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



    BrE BrE//ˈʌndəpænts//
    ; NAmE NAmE//ˈʌndərpænts//
    [plural] Clothes
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  1. 1(informal pants) (British English) a piece of men’s underwear worn under their trousers/pants He came to the door dressed only in his underpants. He sat on the examination table in his underpants. See related entries: Clothes
  2. 2(North American English) a piece of underwear worn by men or women under trousers/pants, a skirt, etc.
See the Oxford Advanced American Dictionary entry: underpants