To attack or challenge or to try to attack or challenge.
To attempt to achieve or acquire.
To struggle or strive
To take part in a wrestling match with someone
To move or lift something with difficulty
To fight.
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.