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battery A battery is something that holds electricity. Flashlights, watches, and some toys have small batteries to make them work. Cars have larger batteries to help start their engines.
dead When we say a battery is dead, we mean that it has no electrical power in it. [1/9 definitions]
dry cell an electric battery cell in which the chemicals are stored as a paste that will not spill.
electrode a part of an electric or electronic device. An electrode allows electric current to enter or leave a device such as a battery.
pole2 either of the opposite ends of a magnet, or either of the charged ends of an electric battery. [1/2 definitions]