Definify.com
Webster 1913 Edition
spanner
span′ner
(spăn′nẽr)
, Noun.
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.
[Chiefly British usage]
4.
pl.
A contrivance in some of the earlier steam engines for moving the valves for the alternate admission and shutting off of the steam.
Webster 1828 Edition
Spanner
SPAN'NER
, n.1.
One that spans.2.
The lock of a fusee or carbine; or the fusee itself.3.
A wrench or nut screw-driver.