Definition of: surge

(sûrj) v. surged, surg·ing v.i.
1. To rise high and roll onward, as waves; swell or heave.
2. To move or go in a manner suggestive of this: The mob surged through the square.
3. To increase or vary suddenly, as an electric current.
4. To slip, as a rope on a windlass.
—v.t.
5. To cause to move in surges.
6. To let go suddenly, as a rope or cable.
—noun
1. A large swelling wave; billow; also, such billows collectively.
2. The act of surging; a heaving and rolling motion, as of great waves.
3. Naut. The tapered drum of a capstan or windlass around which the rope surges.
4. Electr. A sudden fluctuation of voltage due to lightning, switching, etc. See synonyms under WAVE. ♦ Homophone: serge. [<OF sourge-, stem of sourdre rise <L surgere]
—surg′er noun
—surg′y adjective