A contest, a struggle.
the battle of life
A general action, fight, or encounter, in which all the divisions of an army are or may be engaged; a combat, an engagement.
A division of an army; a battalion.
The main body of an army, as distinct from the vanguard and rear; the battalia.
To join in battle; to contend in fight
Scientists always battle over theories.
To fight or struggle; to enter into a battle with.
She has been battling cancer for years.
To nourish; feed.
To render (for example soil) fertile or fruitful