English

Definition of tidal wave noun from the Oxford Advanced Learner's Dictionary

  1. 1a very large ocean wave that is caused by a storm or an earthquake, and that destroys things when it reaches the land According to one account, the explosion caused a tidal wave 65 feet high. See related entries: Coastlines and the sea, Natural disasters
  2. 2tidal wave (of something) a sudden increase in a particular feeling, activity or type of behaviour a tidal wave of crime See related entries: Coastlines and the sea
See the Oxford Advanced American Dictionary entry: tidal wave