coming-out party noun2 •A celebratory social gathering, with music, dancing, and refreshments, at which a young debutante is formally introduced to society."Now tell me, when do you mean to have your coming-out party? I ask because I've nothing ready and want plenty of time, for I suppose it will be the event of the season." — 1876 •(humorous) A party in celebration of someone who is gay coming out of the closet. formscoming-out parties