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: a projecting body part (such as a feather, wing, or fin)
: the largely cartilaginous projecting portion of the external ear — see ear illustration
: a leaflet or primary division of a pinnate leaf or frond
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These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pinna.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
1682, in the meaning defined at sense 2
New Latin, from Latin, feather, wing — more at pen
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Resources for pinna
From the Editors at Merriam-Webster
Anatomy 101: Obscure Words for Body...
Or: It's called a what?
Pinnacles National Monument
Time Traveler for pinna
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More Definitions for pinna
: the largely cartilaginous projecting portion of the external ear
Other words from pinna
More from Merriam-Webster on pinna
Britannica.com: Encyclopedia article about pinna
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