›a bar or handle which moves around a fixed point, so that one end of it can be pushed or pulled in order to control a machine or move a heavy object: Lower the lever to lock the machine into place.
›ECONOMICS, POLITICS, FINANCEsomething you use to try to persuade someone to do what you want or to get the result you want: Using trade or other economic tools as a lever of diplomacy is not new.a lever for (doing) sthIf your mortgage offer is less than you wanted, it may be a useful lever for getting the price of the house down.