Ear n. : The organ of hearing; the external ear.

Ear n. : The sense of hearing; the perception of sounds; the power of discriminating between different tones; as, a nice ear for music; -- in the singular only.

Ear n. : That which resembles in shape or position the ear of an animal; any prominence or projection on an object, -- usually one for support or attachment; a lug; a handle; as, the ears of a tub, a skillet, or dish. The ears of a boat are outside kneepieces near the bow. See Illust. of Bell.

Ear n. : Same as Acroterium.

Ear n. : Same as Crossette.

Ear n. : Privilege of being kindly heard; favor; attention.

Ear v. t. : To take in with the ears; to hear.

Ear n. : The spike or head of any cereal (as, wheat, rye, barley, Indian corn, etc.), containing the kernels.

Ear v. i. : To put forth ears in growing; to form ears, as grain; as, this corn ears well.

Ear v. t. : To plow or till; to cultivate.

Example:
How long does a infant Ear infection take to go away with drops?

Taxonomy
ear, middle ear, ear canal, inner ear, tympanic membrane, portion, cartilage, auricle, outer ear, pinna, skin, ear drum, hearing, hair cells, cochlea, canal, earlobe, vestibular.

Defination from the web:
... comparing arrival-time differences and loudness from each ear, in brain circuits that are connected to both ears. ... WikiSaurus:ear — the WikiSaurus list of synonyms and slang words for ears in many languages. Absolute threshold of hearing. Acoustic reflex. Cerumen. Cholesteatoma ...