Black's Law Dictionary (2nd edition)dictionaries

Exercise

To make use of. Thus, to exercise a right or power is to do something which it enables the holder to do. U. S. v. Souders, 27 Fed. Cas. 1267; Cleaver v. Comm., 34 Pa. 284; Branch v. Glass works, 96 Ga. 573, 23 S. E. 128

Source: Black’s Law Dictionary 2nd Ed (1910)