partymaster

plural partymasters

1. The organizer of a party (social gathering).

   I was the partymaster, but I had to keep myself centered and focused while everyone else had fun.

   2002, Fred Wesley, Hit Me, Fred: Recollections of a Sideman, page 229

   1 more example

   That Powder^([sic]) Puff Girls stamp your mother gave you for graduation is going to come in handy after all! If the partymasters recognize those who've paid by a stamp on the hand, come equipped with your own.

   2002, Jennifer Hanson, The Real Freshman Handbook: A Totally Honest Guide to Life on Campus