The Collaborative International Dictionary of English v.0.48:

Foundry \Found"ry\, n.; pl. Foundries. [See Foundery.]
   1. The act, process, or art of casting metals.
      [1913 Webster]

   2. The buildings and works for casting metals.
      [1913 Webster]

   Foundry ladle, a vessel for holding molten metal and
      conveying it from cupola to the molds.
      [1913 Webster]

WordNet (r) 3.0 (2006):

foundry
    n 1: factory where metal castings are produced [syn: foundry,
         metalworks]