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."