Au'ri-cle, n.
(-kl), n. [Lat. auricula, dim. of auris, ear.]
Sense 1. (Anat.) (a.) The external ear, or that part of the ear which is prominent from the head. (b.) One of two muscular sacs situated at the base of the heart, and exterior to the ventricles; — so called from their resemblance to the auricle or external ear of some quadrupeds.
Sense 2. An instrument applied to the ears to give aid in hearing; a kind of ear-trumpet. Mansfield.