| ball | relating to or characteristic of the motion of objects moving under their own momentum and the force of gravity |
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| ball | a craft capable of traveling in outer space |
| ball | a moving-coil galvanometer that measures electric charge |
| ball | a missile that is guided in the first part of its flight but falls freely as it approaches target |
| ball | a physical pendulum consisting of a large mass suspended from a rod |
| ball | the trajectory of an object in free flight |
| ball | the science of flight dynamics |
| ball | the trajectory of an object in free flight |
| ball | a graphical recording made by a ballistocardiograph |
| ball | a medical instrument that measures the mechanical force of cardiac contractions and the amount of blood passing through the heart during a specified period by measuring the recoil of the body as blood is pumped from the ventricles |
| ball | one of the two male reproductive glands that produce spermatozoa and secrete androgens |
| ball | large tough non-rigid bag filled with gas or hot air |