four-wheel drive

all-wheel drive / all wheel drive

four-wheel drive truck

four-cycle / four-stroke

four by four

fingertip formation / finger-four formation / four finger formation

drive line / drive (propeller) shaft

all-wheel drive

wheel drive

friction-wheel drive

front-wheel drive

gear-wheel drive

front-wheel drive (FWD)

rear-wheel drive (RWD)

wheel lock pistol (wheellock / wheel-lock)

four-point barb

four-charge gun

four by two

four-barreled anti-aircraft gun

four-groove barrel

four-point

four-stage compressor

four-way valve

four-boss breaker cam

four-stroke cycle

four-step stand

four-stroke engine

Four Tonner (Bedford truck)

camshaft drive

direct-drive clutch

drive

drive a wedge

drive spring