後こう羽う

noun

aftershaft; afterfeather

Ornithological term for the small secondary feather that grows from the base of a contour feather.

• 鳥とりの後こう羽うは、正せい羽うの基き部ぶから生はえる小ちいさな羽う毛もうです。

  The aftershaft is a small feather that grows from the base of a contour feather.