(Ordnance) One of a system of guns manufactured by the firm of Vickers' Sons, at Sheffield, Eng. now included in Vickers-Maxim guns. [ Webster 1913 Suppl. ]

. An automatic machine gun in which the mechanism is worked by the recoil, assisted by the pressure of gases from the muzzle, which expand in a gas chamber against a disk attached to the end of the barrel, thus moving the latter to the rear with increased recoil, and against the front wall of the gas chamber, checking the recoil of the system. [ Webster 1913 Suppl. ]

. (Ordnance) One of a system of ordnance, including machine, quick-fire, coast, and field guns, of all calibers, manufactured by the combined firms of Vickers' Sons of Sheffield and Maxim of Birmingham and elsewhere, England. [ Webster 1913 Suppl. ]