[ 'pɪnə ]
■ noun ( plural ~e -ni: )
1》 Anatomy & Zoology the external part of the ear in humans and other mammals; the auricle.
2》 Botany a primary division of a ~te leaf, especially of a fern.
3》 Zoology any of a number of animal structures resembling fins or wings.
Origin
C18: mod. L., from a var. of L. penna 'feather, wing, fin'.