DCCtight trousers that end at your knee, worn especially in the past 〔尤指旧时人们穿的〕齐膝紧身短裤
Examples from the Corpus
knee breeches• Alfred was waving a white-stockinged leg in the air, Heinrich experimentally bending over in his black knee breeches.• Some still wore knee breeches, but tightly-fitting pantaloons buttoned round the ankle over the white silk socks were permitted.