rotary wing
noun Aeronautics.
an airfoil that rotates about an approximately vertical axis, as that supporting a helicopter or autogiro in flight.
Nearby words
rotary press, rotary pump, rotary shutter, rotary tiller, rotary valve, rotary wing, rotary-till, rotate, rotating, rotation, rotation axis
Origin of rotary wing
First recorded in 1930–35
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019