Ear

1. The vertebrate organ of hearing, responsible for maintaining equilibrium as well as sensing sound and divided in mammals into the external ear, the middle ear, and the inner ear. I can't hear out of my left ear.
2.The part of this organ that is externally visible. His ears stuck out like flags.
3. The sense of hearing. That sound grates on the ear.
4. Responsiveness to the sounds or forms of spoken languages. She has an ear for foreign languages.
5. Sympathetic or favorable attention. He has the ear of the president.