/ Dictionary / Index P pennon: Meaning and Definition of Find definitions for: pen•non Pronunciation: (pen'un), [key] — n. a distinctive flag in any of various forms, as tapering, triangular, or swallow-tailed, formerly one borne on the lance of a knight. a pennant. any flag or banner. a wing or pinion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pennon (Thesaurus) penninite pennoncel Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language