\Sis"kin\, n. [Dan. sisgen; cf. Sw. siska, G. zeisig, D.
sijsje; of Slav. origin; cf. Pol. czy?.] (Zo["o]l.)
(a) A small green and yellow European finch ({Spinus spinus},
    or {Carduelis spinus}); -- called also {aberdevine}.
(b) The American pinefinch ({S. pinus}); -- called also {pine
    siskin}. See {Pinefinch}.
Note: The name is applied also to several other related
      species found in Asia and South America.
{Siskin green}, a delicate shade of yellowish green, as in
   the mineral torbernite.