prom /prɒm $ prɑːm/ BrE AmE noun [countable]
[ Date: 1800-1900 ; Origin: promenade ]
1 . American English a formal dance party for ↑ high school students, often held at the end of a school year
2 . British English informal a ↑ promenade (1)
3 . British English informal a ↑ promenade concert
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THESAURUS
▪ dance an organized social event where people to go dance:
The dance will be held in the school gym.
▪ ball a large formal occasion where people dance:
The University holds a ball at the end of June.
▪ prom a formal dance party for high school students, especially in the US, usually held at the end of a school year:
Who’s your date for the prom?
▪ formal American English a dance at which you must wear formal clothes:
He rented a tuxedo to wear to his company’s holiday formal.
▪ disco a place or social event where people dance to recorded popular music:
She met Nick at a school disco.
▪ club/nightclub a place where people go at night to dance:
We went out for dinner and then to a club.