Siphonarid
Pronunciation : Si`pho*na"rid
Part of Speech : n.
Definition : Defn: Any one of numerous species of limpet-shaped pulmonate gastropods of the genus Siphonaria. They cling to rocks between high and low water marks and have both lunglike organs and gills. -- Si`pho*na"rid, a.
(Zo?l.)
Source : Webster's Unabridged Dictionary, 1913