English Dictionary

alum

/əˈlʌm/

noun

(shortening, Canada, US) A past attendee or graduate (of either gender) of a college, university or other educational institution.

I bought some alum to use as a natural deodorant.

意味（1）

(shortening, Canada, US) A past attendee or graduate (of either gender) of a college, university or other educational institution.

Evanston-North Shore alums are happy to open their homes to Sigma actives for special social events.