Crossword clue: a little sac, or bag; a utricle; especially, a part of the membranous labyrinth of the ear. see the note under ear.
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Possible answers
a small pouch into which the semicircular canals open
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a little sac; esp., a part of the membranous labyrinth of the ear. see the note under ear.
67% similar
→ sacculus