The Collaborative International Dictionary of English v.0.48:

Pulverizer \Pul"ver*i`zer\, n.
   One who, or that which, pulverizes.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

21 Moby Thesaurus words for "pulverizer":
   cheese grater, comminutor, crusher, granulator, grater, grinder,
   kominuter, levigator, masher, mill, millstone, mortar and pestle,
   nutmeg grater, pestle, quern, quernstone, rock crusher, roller,
   shredder, steamroller, triturator