pounder

noun[in compounds]5

1. •
   A vessel in which something is pounded, or an implement used in pounding.

   • Since we often prefer to pound our own cutlets rather than buy uneven precut cutlets from the store, a meat pounder is an important piece of equipment. — 2014
2. •
   Something that weighs a specified number of pounds.

   • "Okay, that's a keeper," Harold said as he netted the 3-pounder and put him on a stringer over the side of the boat. — 1970
3. •
   A gun capable of firing a specified weight of shot in pounds.

   • The ship fired the twelve-pounder twice during the battle.
4. •
   One who pounds.
5. •
   Something or someone costing so many pounds sterling.

   • The striker they bought from United was a million-pounder.