Zool. [f. mod.L. Trochidæ, f. Trochus, generic name: see TROCHUS and -ID3.] A mollusk of the family Trochidæ; a top-shell.
1861. P. P. Carpenter, in Rep. Smithsonian Instit., 1860, 215. The shells are not pearly as in the Trochids. Ibid., 216. A conical Trochid.
