feather key

noun Machinery.

a rectangular key connecting the keyways of a shaft and a hub of a gear, pulley, etc., fastened in one keyway and free to slide in the other so that the hub can drive or be driven by the shaft at various positions along it.
Also called feather, spline.

Words nearby feather key

feather duster, feather geranium, feather grass, feather in one's cap, feather in one's cap, a, feather key, feather merchant, feather one's nest, feather one's own nest, feather palm, feather rot