Longman Dictionary of Contemporary English homepage

tidal wave

 noun
     
Related topics: Meteorology, Oceanography, Geography
tidal wave [countable]
1HEO a very large ocean wave that flows over the land and destroys things
2 a very large amount of a particular kind of feeling or activity happening at one time
tidal wave of
a tidal wave of crime
Voters were swept away on a tidal wave of enthusiasm.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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