Wiktionary
bottom hand
n. 1 (&lit bottom hand English) 2 (context cricket English) With a standard batting grip, the hand placed further down the handle of the bat; the batsman's dominant hand, providing most power to a shot.
Usage examples of "bottom hand".
I pull out my bottom hand, and soon we are playing that hand game, quickly—.
Ivan loosened his grip with his bottom hand and drove his top hand down, the butt end of the axe shooting straight out to pop the man in the face.