Shunt.
1. (Railroading.) An English term signifying to switch off a car or train from the main to a side track.
2. (Ordnance.) The transferrence of the studs on a projectile from the deeper to the shallower sides of the grooves of a gun in passing along the bore, so that it may leave the bore axially, as is effected in Armstrong's and some other systems of rifling.
3. (Telegraphy.) A wire connected across the terminals of a coil, so as to divert a portion of the current.