Definition of keg party in English:

keg party

noun

US
  • A large party at which beer is served from a keg, typically attended by students or young people.

    • ‘while classmates flocked to keg parties, he went to the gym’
    social gathering, gathering, social occasion, social event, social function, function, get-together, celebration, reunion, festivity, jamboree, reception, at-home, soirée, social