/ Dictionary / Index P pintail: Meaning and Definition of Find definitions for: pin•tail Pronunciation: (pin'tāl"), [key] — pl. -tails, -tail. a long-necked river duck, Anas acuta, of the Old and New Worlds, having long and narrow middle tail feathers. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pintail (Thesaurus) pintado pin-tailed Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language