Category:Spanner

Span"ner, n.

1. One who, or that which, spans.

2. The lock of a fusee or carbine; also, the fusee or carbine itself. [obs.]

3. 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.

4. pl.

Defn: a contrivance in some of the ealier steam engines for moving The valves for the alternate admission and shutting off of the steam.