the part of the body where the legs join at the top, including the area around the genitals （人体的）胯部，两腿分叉处 the part of a pair of trousers, etc. that covers the crotch 裤裆
Word Originmid 16th cent. (denoting an agricultural or garden fork, also a crutch): perhaps related to Old French croche ‘crozier, shepherd's crook’, based on Old Norse krókr ‘hook’; partly also a variant of crutch.