1. Remove by or as if by rubbing or erasing
   "Please rub out the formula on the blackboard—it is wrong!";
   - erase, score out, efface, wipe off
    
2. [informal] To kill or murder someone
   "The gangsters rubbed out their rival"

Derived forms: rubs out, rubbed out, rubbing out

Type of: cancel, delete

Encyclopedia: Rub out