Grit is very small pieces of stone. It is often put on roads in winter to make them less slippery.

If someone has grit, they have the determination and courage to continue doing something even though it is very difficult.

Grits are coarsely ground grains of corn which are cooked and eaten for breakfast or as part of a meal in the southern United States.

If you grit your teeth, you press your upper and lower teeth tightly together, usually because you are angry about something.

If you grit your teeth, you make up your mind to carry on even if the situation is very difficult.