noun (n)

• (used only in combination) something weighing a given number of pounds(noun.quantity)

  Example:
  The fisherman caught a 10-pounder.
  Their linemen are all 300-pounders.
  

  source: wordnet30
• a heavy tool of stone or iron (usually with a flat base and a handle) that is used to grind and mix material (as grain or drugs or pigments) against a slab of stone(noun.artifact)

  Synonym:
  muller, pestle
  

  source: wordnet30
• One who, or that which, pounds, as a stamp in an ore mill.(noun)

  source: webster1913