barb

rotor, piston, aileron, airfoil, gooseneck, impeller, flanges, crankshaft, actuator, pintle, wind vane, bushing, idler pulley, stators, propeller, rotary, solenoid, hydraulic pump, inlet manifold, splines, venturi, actuation, sheave, lamella, windings, rotor shaft, spindle, collet, carburettor, tappet, aerofoil, trunnion, displacer, compensator, piston rod, nozzle, bimetal, coiler, pinions, capstan, diverter, flowmeter, chamfer, platen, torque wrench, tailstock, fastener, wiper, dihedral, detent, torsion bar, pawl, handwheel, camshaft, coil, pushrods, epicyclic, angulation, swage, cowling, torsion, coupler, clevis, radial, valve, ferrule, pushrod, servomotor, axial, treadle, servo, magneto, deflector, wiper blade, poppet valve, skeg, carburetor, tail rotor, exhaust valve, condenser, cotter pin, compressor, turbine, gages, airbrake, axle, stiction, sponsons, tailplane, baseplate, rudder, fin, calliper, strakes, radome, sine wave, cogging, weldment, windlass, concentricity, hydraulic ram, yaw, vanes, rack, grate, hoop, magnet, shaft, weir, bar, batten, bobbin, bridge, cage, dial, plank, shutter, slit, spokes, spool, centrifugal, cylinder, electrodynamic, gear, inlet, overhung, rectifier, actuated, driven

fan blade, paddle, rudder blade, weathercock, wind tee

crown, point, weathercock, wind tee

aerogenerator, chopper, eggbeater, feather, helicopter, oar, plumage, plume, propellor, whirlybird, windmill, wind generator

blade, mechanical device, rotating mechanism

weather vane, weathervane, web