Definition of water-quake in US English:

water-quake

noun

  • A seismic disturbance on the sea floor, or experienced at sea. Also: a sudden flood, massive wave, etc., reminiscent of that caused by an earthquake.

Origin

Late 16th century; earliest use found in Raphael Holinshed (c1525–?1580), historian. From water + quake, after earthquake.

Pronunciation

water-quake

/ˈwɔːtəkweɪk/