Same as pintailed.n. The pin-tailed duck, Dafila acuta. Also called, from the peculiarity of the tail, pickettail, pigeontail, piketail, sharptail, spiketail, spindletail, splittail, sprigtail, sprittail or spreettail, and kite-tailed widgeon. See cut under Dafila.n. The ruddy duck, Erismatura rubida.n. The sharp-tailed or pin-tailed grouse, Pediœcetes phasianellus, more fully called pintail chicken.