- One who, or that which, spans. - The lock of a fusee or carbine; also, the fusee or carbine
itself. - An iron instrument having a jaw to fit a nut or the head
of a bolt, and used as a lever to turn it with; a wrench; specifically,
a wrench for unscrewing or tightening the couplings of hose. - A contrivance in some of the ealier steam engines for
moving the valves for the alternate admission and shutting off of the
steam.