The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of several small finches, such as Carduelis spinus, a greenish-yellow finch of Eurasia related to the goldfinch, or the pine siskin of North America.
n. A small green and yellow European finch, Carduelis Spinus spinus or Carduelis spinus.
n. Any of various similar birds in the genera Carduelis and Serinus.
the GNU version of the Collaborative International Dictionary of English
n. A small green and yellow European finch (Spinus spinus, or Carduelis spinus); -- called also aberdevine.
n. The American pinefinch (S. pinus); -- called also pine siskin. See pinefinch.
The Century Dictionary and Cyclopedia
n. A small fringilline bird, Chrysomitris (or Spinus) spinus, related to the goldfinch, inhabiting the temperate parts of the Palearctic region; the aberdevine or blackheaded thistlefinch; the tarin.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. small yellow-and-black Eurasian finch with a sharp beak
Word Usage
"Adult male Ethiopian black-headed siskin, Serinus nigriceps, also known as the Ethiopian siskin or (African/Abyssinian) black-headed siskin, or the black-headed serin, photographed at Bale Mountains, Ethiopia (Africa)."