Magnum /(măg"nŭm)/

Mag·num

Magnum

n.
  1. A large wine bottle.
    They passed the magnum to one another freely.
  2. A bone of the carpus at the base of the third metacarpal bone. (Anat.)
  3. A magnum pistol, or the cartridge such a pistol uses; as, he always carried a .44 magnum.

magnum

a.
  1. Having a larger charge than usual for a cartridge of the same caliber; -- of cartridges for handgun; as, a .44 magnum cartridge. (Firearms)
  2. Designed to use a cartridge with a larger charge than usual for handguns of the same caliber; -- of handguns; as, a .44 magnum pistol. (Firearms)