game day noun2 •The day of a competition, as opposed to practice games.I loved the whole ritual of game day; putting on my uniform, driving to the field, doing our warm-ups, hearing the crowd cheer and my name called, and taking my place at shortstop. — 2001 •(figurative) The day when something important is scheduled to happen.This brings us at last to game day. You are going to speak. You are prepared to speak, but you still have some work to do before, during, and right after your presentation. — 2006 formsgame days
