/ Dictionary / Index C clamshell: Meaning and Definition of Find definitions for: clam•shell Pronunciation: (klam'shel"), [key] — n. the shell of a clam. Also calledclam&prim;shell buck&sec;et.a dredging bucket opening at the bottom, consisting of two similar pieces hinged together at the top. a machine equipped with such a bucket. a platen press. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: clamshell (Thesaurus) clamper clamshell door Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language