a. [ L. ponderosus, from pondus, -eris, a weight: cf. F. pondéreux. See Ponder. ]
The sepulcher . . .
Hath oped his ponderous and marble jaws. Shak. [ 1913 Webster ]
Ponderous spar (Min.),
adv. In a ponderous manner. [ 1913 Webster ]
n. The quality or state of being ponderous; ponderosity. [ 1913 Webster ]