1 [intransitive and transitive]
to try very hard to achieve something that is difficult or dangerous:
Firefighters battled the flames.
She had battled against cancer.
a pressure group battling for better schools
battle to do something
Doctors battled to save his life.
to keep fighting or opposing each other until one person or team wins:
32 teams will battle it out.
3 [intransitive] literaryPM
to take part in a fight or war