1670s, perhaps from French pénis or directly from Latin penis "penis," earlier "tail," from PIE *pes- "penis" (cognates: Sanskrit pasas-, Greek peos, posthe "penis," probably also Old English fæsl "progeny, offspring," Old Norse fösull, German Fasel "young of animals, brood"). The proper plural is penes. The adjective is penial. In psychological writing, penis envy is attested from 1924.
实用例句
1. The penis is usually in a flaccid state.
**常处于萎软状态.
来自《简明英汉词典》
2. For the uncircumcised boy, retract the foreskin of the penis and cleanse.
对未作包皮环截术的男孩, 要将**前的包皮退上去清洗.
来自辞典例句
3. Thus in the bull the capacity for erection of the penis precedes the appearance of spermatozoa.