白しら羽は

noun

white feather; white plume

Refers to a feather or plume that is white in color. Often used in literary or descriptive contexts, and in set phrases like 白羽の矢が立つ (to be singled out).

• その鳥とりは白しら羽はが美うつくしい。

  That bird has beautiful white feathers.

• 白しら羽はの矢やが立たつ。

  A white-feathered arrow is chosen (idiom: to be singled out).