/ Dictionary / Index G gaper: Meaning and Definition of Find definitions for: gap•er Pronunciation: (gā'pur), [key] — n. a person or thing that gapes. Also calleda large clam, Tresus capax, common on gravelly and coarse-sand beaches. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gape gapes Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language