Sis"kin (?), n. [Dan. sisgen; cf. Sw. siska, G. zeisig, D. sijsje; of Slav. origin; cf. Pol. czy.] Zool. (a)
A small green and yellow European finch (Spinus spinus, or Carduelis spinus); -- called also aberdevine.
The American pinefinch (S. pinus); -- called also pine siskin. See Pinefinch.
⇒ 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.
© Webster 1913.