prefeast adjective 1noun 1forms 1 adjective1 •Before a feast.Many Lubavitch weddings serve just a few pickups before the main meal, maybe some knishes and some egg rolls. Others go all out. The Kassins offered up a prefeast feast. — 2003 noun1 •A feast held before an event.Like the previous holy day, this one too has a prefeast. — 2002 formsprefeasts