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 be decisively defeated by an encounter with a powerful opponent or a problem that is too difficult.