battery

Universal Words noun (plural batteries) 1 [C] a device that is placed inside a car engine, clock, radio, etc. and that produces the electricity that makes it work: to replace the batteries * a rechargeable battery * battery-powered / -operated * a car battery * The battery is flat (= it is no longer producing electricity). 2 [C] ~ (of sth) (written) a large number of things or people of the same type: He faced a battery of questions. * a battery of reporters 3 [C] (technical) a number of large guns that are used together 4 [C] (BrE) (often used as an adjective) a number of small cages that are joined together and are used for keeping chickens, etc. in on a farm: a battery hen * battery eggs compareFREE-RANGE 5 [U] (law) the crime of attacking sb physically seealsoASSAULTANDBATTERY IDIOMS see RECHARGE