/ Dictionary / Index P port-wine stain: Meaning and Definition of Find definitions for: port'-wine' stain" Pronunciation: (pôrt'wīn', pōrt'-), [key] a large birthmark of purplish color, usually on the face or neck. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Port Washington pos. Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language