/ Dictionary / Index P pillar-and-breast: Meaning and Definition of Find definitions for: pil•lar-and-breast Pronunciation: (pil'ur-un-brest'), [key] — adj. Mining. room-and-pillar. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pillar pillar box Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language