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The swell or crest of surface ocean water created by the tides.
(noun)
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An unusual, often destructive rise of water along the seashore, as from a storm or a combination of wind and high tide.
(noun)
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A tsunami.
(noun)
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An overwhelming manifestation; a flood: a tidal wave of illicit drugs; an emotional tidal wave.
(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.