supergun


su·per·gun

S0897550 (so͞o′pər-gŭn′)n. An extremely large, cannonlike gun designed to shoot projectiles over long distances or to launch satellites and spacecraft into orbit without a propulsion or guidance system, as is needed with a missile.

supergun

(ˈsuːpəˌɡʌn) n (Firearms, Gunnery, Ordnance & Artillery) any extremely powerful gun