When a bell tolls or when someone tolls it, it rings slowly and repeatedly, often as a sign that someone has died.

A toll is a small sum of money that you have to pay in order to use a particular bridge or road.

A toll road or toll bridge is a road or bridge where you have to pay in order to use it.

A toll is a total number of deaths, accidents, or disasters that occur in a particular period of time.

If you say that something takes its toll or takes a heavy toll, you mean that it has a bad effect or causes a lot of suffering.