culottes (n.)youdaoicibaDictYouDict[culottes 词源字典]
"a divided skirt," 1911, from French culotte "breeches" (16c.), a diminutive of cul "bottom, backside, backside, anus," from Latin culus "bottom, fundament." Earlier, in the singular cullote, it was used to mean "knee-breeches" (1842). Por le cul dieu "By God's arse" was an Old French oath.[culottes etymology, culottes origin, 英语词源]