Anatomy. a bladder.
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How to use vesica in a sentence
A myrtle was also a type, but of the female, because its leaf is a close representation of the vesica piscis.
In this figure the cross is made by the intersection of two ovals, each a vesica piscis, an emblem of the yoni.
In modern Christian art this symbol is called vesica piscis, and is sometimes surrounded with rays.
Thus the following solution that I give to our puzzle involves the pointed "oval," known among architects as the "vesica piscis."Amusements in Mathematics | Henry Ernest Dudeney
In the sky is a pretty Madonna and Child in a vesica surrounded by angels.The Shores of the Adriatic | F. Hamilton Jackson
British Dictionary definitions for vesica
anatomy a technical name for bladder (def. 1)
(in medieval sculpture and painting) an aureole in the shape of a pointed oval
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012