A cochlear implant.

plural of bionic ear

A dog's ear that folds backward and shows part of the inside.

A dog's ear that falls forward and completely hides the inside.

in an ear-splitting way; extremely loudly.

(medicine, informal) otoliths

Thinking chiefly or most readily through, or in terms related to, the sense of hearing; specifically, thinking words as spoken, as a result of familiarity with speech or of mental abnormality.

(medicine) Otitis externa.

(rare) hearing distance; earshot.

A liquid medical product in a small bottle, which can be inserted into the ear using a dropper (usually provided). See also eardrop.