battery

noun (plural batteries)

• 1a container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power:a camera battery [as modifier]:battery power

• 2a fortified emplacement for heavy guns: anti-aircraft missile batteries a mobile battery of 105 mm guns
• an artillery subunit of guns, men, and vehicles.

• 3a set of similar units of equipment, typically when connected together: a battery of equipment to monitor blood pressure
• an extensive series, sequence, or range of things:children are given a battery of tests

• 4 [usually as modifier] chiefly British a series of small cages for the intensive rearing of farm animals, especially calves and poultry:battery farming battery hens

• 5 [mass noun] Law the infliction of unlawful personal violence on another person, even where the contact does no physical harm: any act which puts a person in immediate and reasonable fear of battery [count noun]:most batteries involve an assaultSee also assault and battery.

• 6 (the battery) Baseball the pitcher and the catcher.