Supercharge \Su`per*charge"\, 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]