A name applied to various marine univalve shells; esp. to those of the genus Strombus
, which are of large size. Strombus gigas
is the large pink West Indian conch. The large king, queen, and cameo conchs are of the genus Cassis
. See Cameo
and cameo conch
. [1913 Webster
" The conch is sometimes used as a horn or trumpet, as in fogs at sea, or to call laborers from work."