01 n. Any one of numerous species of marine univalve shells belonging to Trochus and many allied genera of the family Trochidae. Some of the spec…
pl.
Trochi ((#))
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1.
Any one of numerous species of marine univalve shells belonging to Trochus and many allied genera of the family Trochidae. Some of the species are called also topshells.(Zool.) Also: topshells