battery

[count] : a device that is placed inside a machine (such as a clock, toy, or car) to supply it with electricity — see picture at car

[count] : a usually large group of similar people, things, or ideas that work together, are used together, etc.

[count] : a group of two or more big guns used by the military

[noncount] law : the crime of hitting or touching someone in a way that is meant to cause harm or injury — see also assault and battery

[count] baseball : the pitcher and catcher on a particular team

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