The term BALL FIELD COVERING is composed of two solutions from a crossword puzzle: TARP (4 letters) and SOD (3 letters). A tarp is a large, waterproof sheet of plastic or canvas that is used to cover a ball field in order to protect it from the elements. SOD is a type of grass turf that is cut into strips and laid down on the ground to form a playing surface. Both tarp and SOD are commonly used to cover ball fields, providing protection from the weather and creating a safe and playable surface.