'Supercharge' definitions:

Definition of 'supercharge'

verb

Increase or raise; "boost the voltage in an electrical circuit" [syn: boost, advance, supercharge]

verb

Increase the pressure on a gas or liquid [syn: supercharge, pressurize, pressurise]

From: GCIDE

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]

From: GCIDE

Supercharge \Su`per*charge"\, n. (Her.) A bearing charged upon another bearing. [R.] [1913 Webster]