/ Dictionary / Index P pinko: Meaning and Definition of Find definitions for: pink•o Pronunciation: (ping'kō), [key] — pl. -os, -oes. pink (def. 5). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pinko (Thesaurus) pin knot pink rhododendron Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language