/ Dictionary / Index P pandora shell: Meaning and Definition of Find definitions for: pando'ra shell" Pronunciation: [key] any marine bivalve of the genus Pandora, having a scimitar-shaped shell with a pronounced ridge along the hinge. the shell itself. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Pandora's box pandour Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language