tidal wave

US /ˈtaɪ.dəl ˌweɪv/
UK /ˈtaɪ.dəl ˌweɪv/
"tidal wave" picture
1.

an unusually large sea wave produced by a submarine earthquake or volcanic eruption

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The coastal town was devastated by a massive tidal wave.
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Scientists are studying the potential for future tidal waves in the region.
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tsunamigiant waveseismic sea wave
2.

an overwhelming rush of something

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There was a tidal wave of support for the new policy.
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The company faced a tidal wave of customer complaints.
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flooddelugetorrentrushsurge
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waveheat wavemedium waveshort wavelong wavenew wavebe on the crest of a wave