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lamp shell

or lamp·shell

noun
  1. a mollusklike marine animal; brachiopod.

Origin of lamp shell

First recorded in 1850–55; so called because its shape was thought to resemble that of an ancient Roman oil lamp
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for lamp shell

lamp shell

noun
  1. another name for a brachiopod

Word Origin for lamp shell

C19: from its likeness in shape to an ancient Roman oil lamp
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