utricle

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A membranous sac contained within the labyrinth of the inner ear and connected with the semicircular canals.
2. n. Botany A small bladderlike one-seeded indehiscent fruit, as in the amaranth.
3. n. A small vestigial blind pouch of the prostate gland.

Century Dictionary and Cyclopedia

1. n. A small sac, cyst, bag, or reservoir of the body; an ordinary histological cell.
2. n. The common sinus of the inner ear; the larger of two sacs in the vestibule of the membranous labyrinth of the ear (the smaller one being the saccule), lodged in the fovea hemielliptica, of oval and laterally compressed shape, communicating with the openings of the membranous semicircular canals, and indirectly also with the saccule. Also called sacculus communis, sacculus hemiellipticus, sacculus semiovalis, utriculus vestibuli.
3. n. In botany, a seed-vessel consisting of a very thin loose pericarp, inclosing a single seed; any thin bottle-like or bladder-like body, as the perigynium of Carex. See cuts under Sarcobatus and Perigynium. Also utriculus in all senses.

Wiktionary

1. n. anatomy One of two otolith organs located in the vertebrate inner ear (the other being the saccule).
2. n. anatomy The prostatic utricle (a small indentation found in the male prostate).
3. n. botany A dry fruit similar to an achene, found in the beet and dock plants.

GNU Webster's 1913

1. n. A little sac or vesicle, as the air cell of fucus, or seaweed.
2. n. (Physiol.) A microscopic cell in the structure of an egg, animal, or plant.
3. n. (Bot.) A small, thin-walled, one-seeded fruit, as of goosefoot.
4. n. (Anat.) A utriculus.

WordNet 3.0

1. n. a small pouch into which the semicircular canals open