top shell

noun

Definition of top shell

1 : any of various marine snails constituting the family Trochidae and having a spiral and usually regularly conical shell marked by a flat base and rhombic aperture and a multispiral operculum and sometimes used to make pearl buttons

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Cite this Entry

“Top shell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/top%20shell. Accessed 18 Feb. 2020.

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