To enter into an armed conflict.
(of a person) To depart, typically from one's home, to join an army at war.
To fight.
To take part in a wrestling match with someone
To move or lift something with difficulty
To struggle or strive
To throw a calf etc in order to brand it
To contend, with an opponent, by grappling and attempting to throw, immobilize or otherwise defeat him, depending on the specific rules of the contest
A struggle.
A wrestling bout.