Slit-shell
Pronunciation : Slit"-shell"
Part of Speech : n.
Definition : Defn: Any species of Pleurotomaria, a genus of beautiful, pearly, spiral gastropod shells having a deep slit in the outer lip. Many fossil species are known, and a few living ones are found in deep water in tropical seas.
(Zo?l.)
Source : Webster's Unabridged Dictionary, 1913