surge

1. See storm surge.
2. See surge current.
3. See surge line.
4. In hydrology, a sudden change in discharge resulting from the opening or closing of a gate that controls the flow in a channel, or by the sudden introduction of additional water into the channel.
5. The fore and aft movement of the center of gravity of a ship.
   See heave, sway, ship motion.
6. Water transported up a beach by breaking waves.