A genus of large univalve mollusks, including the partridge shell and tun shells.
d[=o]'li-um, n. a Roman earthenware jar for wine, oil, grain, &c.:--pl. D[=O]'LIA. [L.]
[L., a very large jar.] (Zool.) Gen. of whelk, Apple tun-shell, barrel-shaped and with short spire. Mediterranean and Pacific.