/ Dictionary / Index P portcullis: Meaning and Definition of Find definitions for: port•cul•lis Pronunciation: (pôrt-kul'is, pōrt-), [key] — n. (esp. in medieval castles) a strong grating, as of iron, made to slide along vertical grooves at the sides of a gateway of a fortified place and let down to prevent passage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: portcullis (Thesaurus) Port Coquitlam port de bras Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language