Definitions for "rail gun"
a device that accelerates a projectile using electromagnetic forces
a device that employs electricity to magnetically accelerate a projectile to speeds which would be unattainable by any other means
a device that uses an electromagnetic force to accelerate a projectile to very high speeds
a simple devise illustrated above with two rails separated by a distace L
a specific application of the Gauss Gun principles
Keywords:  cannon, super, kind, speed, high
a kind of super high-speed cannon
a device like a train on a track, with the train propelled by a powerful electrical pulse