fletching
(finance, of an option) That can be exercised on dates less-frequently than quarterly (usually annually), a set time period (usually one year) after the issue date, and before the expiry date.
The process of attaching fins, such as halved feathers, to a projectile in order to stabilize its flight. / The fins or feathers so attached.
A land vehicle resembling a bicycle or tricycle but powered by the arms rather than the legs.
(anthropology, dated in academic contexts) A member of one of various peoples native to the Horn of Africa, generally restricted to those that speak Cushitic languages.
その見習いは、各矢の飛行が安定するように割った羽などを取り付ける工程（羽根付け）を午後いっぱい練習した。
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