rotary wing

noun Aeronautics.

an airfoil that rotates about an approximately vertical axis, as that supporting a helicopter or autogiro in flight.

Nearby words

  1. rotary press,
  2. rotary pump,
  3. rotary shutter,
  4. rotary tiller,
  5. rotary valve,
  6. rotary-till,
  7. rotate,
  8. rotating,
  9. rotation,
  10. rotation axis

Origin of rotary wing

First recorded in 1930–35 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019