Definition of: utricle

(y′tri·kəl) noun
1. Anat. A small saclike cavity, especially the larger of two found in the bony vestibule of the inner ear.
2. Bot. a A small fruit having an inflated pericarp, as in the pigweed. b An air cell, as in certain aquatic plants. [<L utriculus, dim. of uter skin bag]