noun
in machinery : a sunk key without taper that is permanently fixed in one of the connected pieces and that is a sliding fit in a keyway in the other so as to permit relative longitudinal motion — called also spline
noun
in machinery : a sunk key without taper that is permanently fixed in one of the connected pieces and that is a sliding fit in a keyway in the other so as to permit relative longitudinal motion — called also spline
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012