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battery [ˈbætəri]

1 battery noun
  • a device that is placed inside a machine (such as a clock, toy, or car) to supply it with electricity
  • a usually large group of similar people, things, or ideas that work together, are used together, etc.
  • a group of two or more big guns used by the military

2 battery adjective
  • relating to or produced by a type of farming in which animals (such as chickens) are kept in small cages