WordWeb Online

1. Projectiles to be fired from a gun
   - ammo
    
2. Any nuclear, chemical or biological material that can be used as a weapon of mass destruction
    
3. Information that can be used to attack or defend a claim or argument or viewpoint
   "his admission provided ammunition for his critics"

Derived forms: ammunitions

Type of: arms, gen [Brit, informal], implements of war, info [informal], information, material, munition, stuff, weaponry, weapons system

Encyclopedia: Ammunition