Assuming you are referring to a car dashboard, here are some common symbols:
Battery: This symbol looks like a battery and means that your battery is charging. If the light is red or yellow, it may mean that the battery isn't charging properly or needs to be replaced.
Brake: This symbol looks like a exclamation point inside of a circle and means that your brake system needs attention. It could be as simple as the parking brake being on or low brake fluid levels.
Check Engine: This symbol looks like an engine and means that your check engine light is on. This could indicate anything from a loose gas cap to a serious engine problem.
Oil Pressure: This symbol looks like an oil can and means that your oil pressure is low. This could be due to low oil levels or a faulty oil pump.
Tire Pressure: This symbol looks like an exclamation point inside of parentheses and means that one or more of your tires has low air pressure.