ear tunnel

bend someone's ear

To bore; to talk too long, especially to one particular person.

ear to the ground

The practice or characteristic of carefully gathering information; a state or mindset of attentiveness.

flea in one's ear

A stinging rebuke or rebuff.

give ear

To listen: to devote one's attention to an auditory event.

go in one ear and out the other

To be heard but not attended to, when a person fails to pay attention.

have a word in someone's ear

To speak to someone in private.

have the wolf by the ear

To be in a dangerous situation from which one cannot disengage, but in which one cannot safely remain.

have Van Gogh's ear for music

To be tone-deaf.