the motion of swelling, rolling, or sweeping forwards like that of a wave or series of waves

They hear like Ocean on a western beach the surge and thunder of the Odyssey — Andrew Lang

a sudden increase in values, prices, etc

a short-lived sudden rise of current in an electrical circuit

to move with a surge or in surges

The crowd surged past us

to increase suddenly

said of an electrical current or voltage: to rise suddenly to an excessive or abnormal value

to rise and fall; to toss

The ship surged in heavy seas

said of a rope: to loosen round a windlass, capstan, or other winding device