A rotating shaft that drives (or is driven by) a crank.
To deform in such a manner that part of the rod or bolt is displaced sideways, offset from the longitudinal axis of the part, but remains parallel with the part's main longitudinal axis, with the final shape somewhat resembling a crankshaft.
A bar or lever, generally of wood, used in a windlass or capstan, for heaving anchor, and, in modified forms, for various purposes.