That is your engine oil pressure light, it should look like an oil pitcher and it will be red. If that ever comes on when you are driving please pull over, it can mean that your engine is low on oil and if you were to keep driving it could cause major damage to your engine. It doesn't always mean that it is low on oil or that there is an issue, but it is best to treat it that way just to be safe.
So, if you spot that light on your dash while you are driving, pull over, turn off the engine and call for a professional to help.
Happy Adventures
Heather