What is the definition of a belt when having to do with farming?

It could have many definitions depending on the use of the Word... perhaps a simple definition like a DRIVE BELT that transfers energy from a power supply to machine, or a SHELTER BELT which, on it's own can have several definitions, the most common used here in Wyoming is a wind break to keep the soil from blowing, or drying. Or a stand of trees to keep the wind from annoying the residents of a homestead. It could even mean a leather strap to carry a belt buckle... or a heavy duty shot of Whisky