When it snows, the local government sends trucks out to push the snow off of the major roads. This is called "plowing" the road, and the tool on the front of the trucks that pushes the snow away is called a "plow".
The word "plow" also describes what farmers do to get their fields ready to plant crops in. In old times, farmers used to use a horse, donkey, or cow to pull the plow around their fields. These days, a lot of farmers use a tractor instead. But it's still called "plowing" the field.
The object of "plow" can be "the street", or it can be "the snow". When talking about farming, you can "plow the soil" or "plow the field".