Definition of "Battle" :

noun: an energetic attempt to achieve something

"He fought a battle for recognition."

noun: a hostile meeting of opposing military forces in the course of a war

"Grant won a decisive victory in the battle of Chickamauga."

noun: an open clash between two opposing groups (or individuals)

"Police tried to control the battle between the pro- and anti-abortion mobs."

verb: battle or contend against in or as if in a battle

"They battled over the budget."