auricle

3.06  auricle; pinna. The external and visible portion of the ear comprising an ovoid-formed, skin-covered, fibro-cartilaginous appendage that is attached to the head around the opening of the external auditory meatus. The auricle contributes to the localization of sounds in the front-back and vertical directions.

Annotation            See E.A.G. Shaw, “Transformation of sound pressure level from the free field to the eardrum in the horizontal plane,” J. Acous. Soc. Am., 56, No. 6 (1974) 1848-1861.