Hypertext Webster Gateway: "trochus"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Trochus \Tro"chus\, n.; pl. {Trochi}. [NL., fr. Gr. ? a wheel.]
(Zo["o]l.)
Any one of numerous species of marine univalve shells
belonging to {Trochus} and many allied genera of the family
{Trochid[ae]}. Some of the species are called also
{topshells}.
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