'Sundial shell' definitions:
Definition of 'Sundial shell'
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Sundial \Sun"di`al\, n.
An instrument to show the time of day by means of the shadow
of a gnomon, or style, on a plate.
[1913 Webster]
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Sundial shell (Zool.), any shell of the genus Solarium. See
Solarium.
[1913 Webster]
