'Seaquake' definitions:

Definition of 'seaquake'

(from WordNet)
noun
An earthquake at the sea bed [syn: seaquake, submarine earthquake]

Definition of 'Seaquake'

From: GCIDE
  • Seaquake \Sea"quake`\ (s[=e]"kw[=a]k`), n. A quaking of the sea. [1913 Webster] Sear