fletching

/F L EH1 CH IH0 NG/
verb
  1. 1

    To feather, as an arrow.

noun
  1. 1

    The process of attaching fins, such as halved feathers, to a projectile in order to stabilize its flight.

  2. 2

    The fins or feathers so attached.

Source: https://en.wiktionary.org/wiki/fletch, https://en.wiktionary.org/wiki/fletching