pinna

Etymology

From Latin pinna (“dorsal fin; wing, feather”). Doublet of pen, penna, and panne.

noun

  1. (anatomy) The visible part of the ear that resides outside of the head, the auricle; outer ear excluding the ear canal.
  2. (botany) A leaflet or primary segment of a pinnate compound leaf.
  3. (zoology) A feather, wing, fin, or other similar appendage.

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