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Meaning of low-water mark

low'-wa'ter mark"

Pronunciation: [key]
  1. the lowest point reached by a low tide.
  2. something indicating the bottom of a decline.
  3. the lowest or least admirable level: the low-water mark of political chicanery.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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