The term BASEBALL FIELD COVER can be summarized as a tarp, which is a four-letter word. A tarp is a large sheet of waterproof material that is used to cover a baseball field in order to protect it from the elements. It is typically made of plastic or canvas and is secured to the ground with stakes or ropes. The tarp is used to keep the field dry during rain or snow, and to protect the grass from the sun's rays.