trundlehead Definition

gear wheel, epicyclic gear, gear down, spindle, wheel and axle, homodromous, tailpin, epicycloidal wheel, polyspast, snipebill, differential gear, musical box, mechanical device, danaide, block and tackle, kingbolt, planet wheel, circumgyration, vireton, circumgyrate, snaphead, circumvolution, ratchet wheel, verticil, inwheel, bevel gear, pinion, brake drum, pillow block, bitstock, coordinate axis, semiaxis, trispast, pulley, minor axis, axle, contrate, contrarotation, control surface, vamplate, major axis, monaxial, capstan, circumvolute, car wheel, cycloscope, gear ratio, drawbore, wheelband, capsquare, brush wheel, ungula, tilt hammer, mechanical advantage, chain pump, bridgetree, triblet, link motion, shaft, bourrelet, balance wheel, tire iron, circumnutate, wheel, roller, drivebolt, circumrotation, cylindroid, axial rotation, axis, machine screw, discous, sheave, heelpost, spindleshanks, equirotal, brachydome, rudderhead, chanfrin, trochilics, wood screw, allen screw, unpinion, setbolt, rotor, rotate, axis of rotation, rackwork, guy rope, pinacoid, heterodromous, septifragal, chamfret, counterwheel, ellipsoid of revolution, magnetic moment, sprocket, knighthead, fan belt, bell buoy,