BUCK (5)

Buck, v. t. 1. 1. (Mil.) To subject to a mode of punishment which consists in tying the wrists together, passing the arms over the bent knees, and putting a stick across the arms and in the angle formed by the knees.
2. 2. To throw by bucking. See Buck, v. i., 2.
The brute that he was riding had nearly bucked him out of the saddle. W. E. Norris.