A small machine gun, particularly the .45 calibre M3 used by the US in WW2.
A levered device for forcing grease into machinery.
A handgun that fires a cartridge of this calibre; chiefly a revolver, but rarely an autoloader firing an unusually powerful calibre.
A powerful firearm cartridge, often derived from a shorter, less powerful cartridge calibre that uses the same bullet.
A bottle containing 1.5 liters of fluid, double the volume of a standard wine bottle.