alumnus
/əˈlʌmnəs/noun
(pl. alumni /-naɪ/)
- a male former pupil or student of a particular school, college, or university男校友：
a Harvard alumnus.
一名哈佛男校友。
USAGE
In the singular， alumnus nearly always means a male， but the plural alumni can be used to refer to pupils or students of either sex. See also ALUMNA.
词源
mid 17th cent.: from Latin， 'nursling， pupil'， from alere 'nourish'.