railgun (electromagnetic gun)

rail (railroad track, train track) / rail, track (guide for a curtain or door) / early preparations for the smooth progress of something

light rail

gun, a very portable, short weapon, for hand use

(onomatopoeia) thud, the sound of something being hit

(slang) (before a verbal noun) Used to intensify a verb.

cap gun, toy gun

カナダガン: a Canada goose

Synonym of 機関銃 (kikanjū, “machine gun”)

a stun gun