From The Collaborative International Dictionary of English v.0.48 :
Pinefinch \Pine"finch`\ (p[imac]n"f[i^]nch`), n. (Zool.)
(a) A small American bird ({Spinus spinus syn. Chrysomitris
spinus); -- called also pine siskin, and American
siskin.
(b) The pine grosbeak.
[1913 Webster]