1. The act of turning and running with your back turned to your opponent in a very urgent manner to escape submission. 2. To totally disengage, turn and run out of a submission or position and revert to standing some distance away out of danger. 3. A grappling technique.
Dont just let him sink in that heel hook, you gotta schaub out of that.
Schaub away from your opponent if you feel the danger coming on.