The fleshy part of the outer ear, consisting of a flap of cartilage and skin. It is also called the auricle.
The part of the EAR, formed of cartilage and skin, that is external to the head. In animals it is an important element in detecting the direction of sound.
(auricle) n. the flap of skin and cartilage that projects from the head at the exterior opening of the external auditory meatus of the *ear (see illustration). In humans the pinna is largely vestigial but it may be partly concerned with detecting the direction of sound sources.