Pintail

n.	1.	(Zool.) A northern duck (Dafila acuta), native of both continents. The adult male has a long, tapering tail. Called also gray duck, piketail, piket-tail, spike-tail, split-tail, springtail, sea pheasant, and gray widgeon.
	2.	(Zool.) The sharp-tailed grouse of the great plains and Rocky Mountains (Pediocætes phasianellus); - called also pintailed grouse, pintailed chicken, springtail, and sharptail.

Noun

1.

pintail - long-necked river duck of the Old and New Worlds having elongated central tail feathers Synonyms: Anas acuta, pin-tailed duck

Anas, Anas acuta, duck, genus Anas, pin-tailed duck