an airfoil that rotates about an approximately vertical axis, as that supporting a helicopter or autogiro in flight.
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- rotary press,
- rotary pump,
- rotary shutter,
- rotary tiller,
- rotary valve,
- 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