I. noun — [ mass noun] 1. a supply or quantity of bullets and shells. • guns, ammunition, and explosives.
• [as modifier]
an ammunition dump.
2. considerations that can be used to support one’s case in debate • these figures provide ammunition to the argument for more resources.
– origin late 16th cent.: from obsolete French amunition, alteration (by wrong division) of la munition ‘the munition’ (see munition).