Webster's Revised Unabridged Dictionary · 1913

clamshell

clamshell , noun

1.

the shell of a clam.

2.

a dredging bucket with hinges like the shell of a clam.

Text from the public-domain GNU Collaborative International Dictionary of English, derived from Webster's Revised Unabridged Dictionary (1913). Definitions marked with were added by later GCIDE contributors and are not in the original 1913 edition.

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