Main Entry:

¹pin·ion

Pronunciation:

\ˈpin-yən\

Function:

noun

Etymology:

Middle English, probably modification of Anglo-French *empignon, enpenoun flight feathers, ultimately from Vulgar Latin *pinnion-, pinnio, from Latin pinna feather — more at pen

Date:

15th century

1: the terminal section of a bird's wing including the carpus, metacarpus, and phalanges ; broadly : wing2: feather, quill ; also : flight feathers

— pin·ioned \-yənd\ adjective