(aeronautics) Of a propeller: capable of having its blades streamlined by rotating them perpendicular to the axis of the propeller when the engine is shut down, so that the propeller does not windmill as the aircraft flies.

Any of the long slender feathers on the rear part of a rooster.

Alternative form of ruffle some feathers; used in negative-polarity contexts

plural of feather star

An unstalked crinoid, a comatulid.

plural of feathery

An unusual feather-like form assumed by ice at the summits of mountains.

plural of ice feather

plural of feather edge

An edge of a board, plank, etc. that has been made very thin.