[医] 小囊; 椭圆囊

[ noun ]
a small pouch into which the semicircular canals open
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Utriculus \U*tric"u*lus\, n. [L., a little womb or matrix, a
calycle.] (Anat.)
A little sac, or bag; a utricle; especially, a part of the
membranous labyrinth of the ear. See the Note under {Ear}.