rotary wing
noun Aeronautics.
an airfoil that rotates about an approximately vertical axis, as that supporting a helicopter or autogiro in flight.
Origin of rotary wing
First recorded in 1930–35
Words nearby rotary wing
rotary press,
rotary pump,
rotary shutter,
rotary tiller,
rotary valve,
rotary wing,
rotary-till,
rotate,
rotating,
rotation,
rotation axis