(physics) Any device that converts the energy of particles emitted from atomic nuclei into electrical energy.

(automotive) A 12-volt battery used run the electric starter motor to start the internal combustion engine of an automobile, and power accessories when the engine is off and alternator is not turning.

A large container for holding water in which a person may bathe (take a bath).

Any of a group of electrical batteries that have a lithium anode; used in many portable electronic devices.

(electrochemistry, electronics) A type of rechargeable battery used in many consumer electronics devices.

(linguistics) a vowel split in some varieties of English (such as British English as spoken in southern England, American English spoken in Boston, and Australian, New Zealand and South African English) in which the phoneme /æ/, as pronounced in other varieties of English, is pronounced in some words as /ɑː/.

A person who participates in a freestyle rap battle, attempting to insult an opponent by using witty improvised rapping.

A bathrobe in the style of a Japanese kimono.

(idiomatic, euphemistic) Being shown a red card in soccer.

The area where a land battle is or was fought, which is not necessarily a field.