pack out

verb4

1. •
   To fill with spectators, passengers etc.

   • The stadium was packed out.
2. •
   To become quite compacted; to become tightly-packed.
3. •
   To bring something (often waste) away when one leaves a natural environment like a campground.

   • Be sure to bring enough bags to pack out all your trash.
4. •
   (slang) To beat up; to jump.