Definition of pinna
pinnae
play \ˈpi-ˌnē, -ˌnī\ orpinnas
1a : a projecting body part (such as a feather, wing, or fin)b : the largely cartilaginous projecting portion of the external ear — see ear illustration
2 : a leaflet or primary division of a pinnate leaf or frond
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Origin and Etymology of pinna
New Latin, from Latin, feather, wing — more at pen
First Known Use: 1682
Medical Dictionary
Illustration of pinna
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Britannica.com: Encyclopedia article about pinna
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