/ Dictionary / Index U underpitch vault: Meaning and Definition of Find definitions for: un'der•pitch vault" Pronunciation: (un'dur-pich"), [key] a construction having a central vault intersected by vaults of lower pitch. Also calledSee illus. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. underpinning underplay Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language