What does POUND mean?

verb

1. hit hard with the hand, fist, or some heavy instrument“the salesman pounded the door knocker”
2. strike or drive against with a heavy impact“ram the gate with a sledgehammer”
3. move heavily or clumsily“The heavy man lumbered across the room”
4. move rhythmically“Her heart was beating fast”
5. partition off into compartments“The locks pound the water of the canal”
6. shut up or confine in any enclosure or within any bounds or limits“The prisoners are safely pounded”
7. place or shut up in a pound“pound the cows so they don't stray”
8. break down and crush by beating, as with a pestle“pound the roots with a heavy flat stone”