Vasum

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Vasum \Va"sum\, n. [L., a vase. See {Vase}.] (Zool.)
     A genus including several species of large marine gastropods
     having massive pyriform shells, with conspicuous folds on the
     columella.
     [1913 Webster]