lever

A lever is a simple tool, a bar resting on a fixed point. If one end of the bar is pushed, the force is used at the other end.

Example: A see-saw in a children's' playground is a simple lever.

A lever is a long handle used to operate a machine.

Example: The signalman pulled on the lever to change the railway signals.

Lever is to use something to do something else.

Example: He used his charm as a lever to get past the guards at the gate.

To lever is to move or lift something with lever.

Example: She used a long pole to lever the large rock out of the way.