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Webster 1913 Edition

slit-shell

slit′-shellˊ

(slĭt′shĕlˊ)
,
Noun.
(Zool.)
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.

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