[1] : The Collaborative International Dictionary of English v.0.48

siskin \sis"kin\, n. dan. sisgen; cf. sw. siska, g. zeisig, d.
   sijsje; of slav. origin; cf. pol. czyzdot. zool.
   a a small green and yellow european finch spinus spinus,
       or carduelis spinus; -- called also aberdevine.
   b the american pinefinch spinus pinus; -- called also
       pine siskin. see pinefinch.
       1913 webster

   note: the name is applied also to several other related
         species found in asia and south america.
         1913 webster

   siskin green, a delicate shade of yellowish green, as in
      the mineral torbernite.
      1913 webster
see also:
spinus spinus carduelis spinus aberdevine spinus pinus pine siskin pinefinch 
siskin green 

[2] : The Collaborative International Dictionary of English v.0.48

aber-de-vine \ab`er-de-vine"\, n. zool.
   the european siskin carduelis spinus, a small green and
   yellow finch, related to the goldfinch.
   1913 webster
see also:
carduelis spinus 

[3] : WordNet (r) 2.0

carduelis spinus
     n : small sharp-billed yellow-and-black eurasian finch syn: siskin
see also:
siskin 

Spinus >> S Words
Spinus, definition of term: Spinus
spinus_pag1.html