feather in French

A branching, hair-like structure that grows on the bodies of birds, used for flight, swimming, protection and display.

Long hair on the lower legs of a dog or horse, especially a draft horse, notably the Clydesdale breed. Narrowly only the rear hair.

(aeronautics) To streamline the blades of an aircraft's propeller by rotating them perpendicular to the axis of the propeller when the engine is shut down so that the propeller does not windmill during flight.