high-water mark

Use High-water mark in a sentence

high-water mark

[hahy-waw-ter, -wot-er]
a mark showing the highest level reached by a body of water.
the highest point of anything; acme: Her speech was the high-water mark of the conference.


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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
high-water mark
1.  a.  the level reached by sea water at high tide or by other stretches of water in flood
 b.  the mark indicating this level
2.  the highest point

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Idioms & Phrases

high-water mark

The peak of something, especially an achievement. For example, This composition is the high-water mark of his entire output. This expression alludes to the highest mark left on shore by the tide. [Mid-1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences
Water-level data from sensors at selected locations were compared to
  corresponding high-water mark elevations.
Its publication was the high-water mark of the idealistic tide.
Yet this could be a high-water mark for the euro-area economy.
Yet that case was something of a high-water mark for the commission.
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