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tideline

British  
/ ˈtaɪdˌlaɪn /

noun

  1. the mark or line left by the tide when it retreats from its highest point

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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About 60% of us in Wales live in coastal areas, with some communities living below the high tideline.

From BBC Oct. 30, 2021

Placozoans use their cilia to crawl randomly along rocks at the tideline until they detect microalgae and stop to graze.

From Science Magazine Oct. 27, 2021

The wall is to guard against mudslides, she explains, gesturing at a ghostly tideline that rings the interior.

From The Guardian Jan. 7, 2020

They were also destroying the native tideline habitat, but this did not seem to concern them.

From Scientific American Oct. 2, 2015

The storm had littered the shore and he walked the tideline looking for anything of use.

From "The Road" by Cormac McCarthy

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