Pack out Definition 1 of 2Pro Tip 1/3Event Popularity Used when an event is so well-attended that no more people can fit in the space. They had to turn away fans because the game packed out the stadium. Pro Tip 2/3Colloquial Usage Commonly used in casual conversation rather than in formal writing. The bar is busiest on Fridays; it's always packed out by 8 PM. Pro Tip 3/3Hyperbole Caution Avoid exaggerating when the place is not fully occupied. We shouldn't say the gallery was packed out if only half the tickets sold.