The Collaborative International Dictionary of English v.0.48:

Carduelinae \Carduelinae\ n.
   a subfamily of birds consisting of the old world finches,
   many of which have taken up residence in the Americas; -- it
   is a subgroup of finches used in some classifications, in
   which the Fringillidae are divided into two subfamilies,
   the Carduelinae (including the goldfinches, siskins,
   redpolls, crossbills, and linnets) and Fringillinae (the
   brambling and the chaffinches). The siskins and goldfinches
   have migrated as far south as the southern end of South
   America. --T. M. Shortt.

   Syn: subfamily Carduelinae.
        [WordNet 1.5 +PJC]

WordNet (r) 3.0 (2006):

Carduelinae
    n 1: used in some classifications for a subgroup of finches
         [syn: Carduelinae, subfamily Carduelinae]