1.a piece of underwear worn by men or women under trousers/pants, a skirt, etc. 一种男人或女人穿在裤子或裙子之下的内衣
2.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. 内裤是一种有双腿可以穿过的洞并在腰部或臀部有松紧的内衣,在英式英语中, underpants 是指男士的内衣,但在美式英语中, underpants 既可指男士的内衣,也可指女士的内衣。