The Collaborative International Dictionary of English v.0.48:

Carpodacus \Carpodacus\ n.
   a genus of birds including the house finch (Carpodacus
   mexicanus) and purple finch (Carpodacus purpurea).

   Syn: genus Carpodacus.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Carpodacus
    n 1: house finches and purple finches [syn: Carpodacus, genus
         Carpodacus]