1) FOR A PHYSICIAN 2) Gym spheroid 3) Heavy spheroid in a gym 4) It may be tossed in the gym 5) Workout catch 
A medicine ball (also known as an exercise ball, a med ball, or a fitness ball) is a weighted ball roughly the diameter of the shoulders (approx. 13.7 inches), often used for rehabilitation and strength training. The medicine ball also serves an important role in the field of sports medicine. However, it should not be confused with the larger, inf...
[n] - heavy ball used in physical training
noun heavy ball used in physical training
A soft, weighted ball about the size of a soccer ball used in dryland workouts. They come in various weights ranging from one to 20 pounds.