To push (someone) to the ground; to defeat, overcome.
To approach in a determined manner.
To steer away from the wind; to approach from windward.
To intensify one's efforts.
To exert downward pressure on one's abdomen, as in giving birth, forcing out feces, and some similar bodily maneuvers.
Used other than figuratively or idiomatically: see bear, down.
To strive, or to make efforts, with a twisting, or with contortions of the body.
To strive, to labour in difficulty, to fight (for or against), to contend.
A contortion of the body in an attempt to escape or to perform a difficult task.
Strife, contention, great effort.