pennon

/หˆpษ›nษ™n/
noun
  1. 1

    A thin, often triangular flag or streamer, especially as hung from the end of a lance or spear.

  2. 2

    A long pointed streamer or flag on a vessel.

  3. 3

    A wing (appendage of an animal's body enabling it to fly); any of the outermost primary feathers on a wing.

    syn:pinion

Source: https://en.wiktionary.org/wiki/pennon