Webster's Revised Unabridged Dictionary · 1913

Mask shell

Mask shell

(Zoology) Any spiral marine shell of the genus Persona, having a curiously twisted aperture.

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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