a.
n. The state of being bent like a hook; incurvation. [ 1913 Webster ]
n.
[ So called from the inventor. ] (Mach.) Spur gearing having teeth slanting across the face of the wheel, sometimes slanting in opposite directions from the middle. [ 1913 Webster ]
[ So called from the inventor. ] (Mach.) A universal joint. See under Universal. [ 1913 Webster ]
n.