N-PLURAL [oft a pair of NOUN] (英国英语)男用内裤;(美国英语)(男用或女用)内裤;衬裤 Underpants are a piece of underwear which have two holes to put your legs through and elastic around the top to hold them up round your waist or hips. In British English, underpants refers to only men's underwear but in American English it refers to both men's and women's. (英国英语)男用内裤;(美国英语)(男用或女用)内裤;衬裤