v. t. [ imp. & p. p. Supercharged p. pr. & vb. n. Supercharging ] [ Pref. super- + charge. Cf. Surcharge. ] (Her.) To charge (a bearing) upon another bearing; as, to supercharge a rose upon a fess. [ 1913 Webster ]
n. (Her.) A bearing charged upon another bearing. [ R. ] [ 1913 Webster ]