The Open Dictionary

frat boy

noun

UK/ˈfræt ˌbɔɪ/
US/ˈfræt ˌbɔɪ/

Definitions of frat boy noun

  1. Countable

    A young man who is a member of a college fraternity, often associated with boisterous and immature behavior.

    • The frat boys were making a lot of noise at the party.

    • He was seen as a typical frat boy due to his inappropriate behavior on campus.

    • The frat boys celebrated after the sports game, being loud and somewhat out of line.