tooth shell

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noun

any marine mollusk of the class Scaphopoda, having a curved, tapering shell that is open at both ends.
the shell itself.

Origin of tooth shell

First recorded in 1705–15
Also called tusk shell.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for tooth shell

tooth shell

noun

another name for the tusk shell
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012