He jacked the car up so that he could replace the brake pads.
2
To raise or increase.
If you want to jack your stats you just write off failures as invalid results.
3
To produce by freeze distillation; to distil (an alcoholic beverage) by freezing it and removing the ice (which is water), leaving the alcohol (which remains liquid).
4
To steal something, typically an automobile. Shortened form of carjacking.