<ornithology> Any one of several species of fringilline birds of the genus Calcarius (or Plectrophanes), and allied genera. The Lapland longspur (C. Lapponicus), the chestnut-coloured longspur (C. Ornatus), and other species, inhabit the United States.

Origin: So called from the length of the hind claw.

(01 Mar 1998)