Railgun

//ˈɹeɪl.ɡʌn// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An electromagnetic gun that uses a large electrical current to propel a projectile down a track of two parallel conductive rails.
  2. 2
    A railway gun.
  3. 3
    A benchrest rifle.

Etymology

From rail + gun. * (railway gun): From being a gun mounted on a rail car, and being railroad-mobile. * (EM gun): From being a projectile ejecting device with a pair of electric conducting rails that a launch sled runs along, which shoots the projectile.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.