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autogiro an aircraft that is pulled forward by a conventional propeller and held up in the air by a large horizontal rotor mounted on top of the fuselage.
backwash in nautical terminology, water that an oar, propeller, or the like pushes toward the rear of a boat. [2/4 definitions]
drivetrain the assembly that transmits an engine's rotary motion to the actual means of propulsion such as a propeller or wheel.
feather to turn the chords of (propeller blades) parallel to the line of flight, or turn off (a plane's engine) during flight. [1/12 definitions]
leading edge the front edge of an airfoil, propeller blade, or sail that faces the wind or direction of motion. [1/2 definitions]
outboard motor a small portable gasoline engine with a propeller, which is mounted onto the stern of a boat.
prop3 (informal) a propeller, as on an airplane or boat.
propjet an airplane with a turbo-propeller engine or engines; turboprop.
radial engine an internal combustion engine in which the cylinders are arranged around a central shaft, formerly used to power propeller-driven aircraft.
screw a device consisting of rotary blades oriented so that they pull or drive something by transferring helical force as they rotate; screw propeller. [1/17 definitions]
screw propeller two or more blades mounted on a hub so that, when rotated, they push air or water backward to give an aircraft or ship forward thrust; propeller.
slipstream the flow of air pushed backward by the movement of an aircraft propeller; backwash. [1/3 definitions]
spinner a cap that fits over the hub of an airplane propeller and spins with it. [1/4 definitions]
trailing edge the back edge of an airfoil or propeller blade.
turboprop a turbojet engine with a turbine-driven propeller that provides a large part of the thrust, adding this to the thrust of the jet exhaust; turboprop engine. [1/2 definitions]