/ Dictionary / Index P piacular: Meaning and Definition of Find definitions for: pi•ac•u•lar Pronunciation: (pī-ak'yu-lur), [key] — adj. expiatory; atoning; reparatory. requiring expiation; sinful or wicked. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Piacenza Piaf Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language