Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

tidemark

noun [C]
 
 
/ˈtaɪd.mɑːk/ US  /-mɑːrk/

Definition

(also high water mark) a line of waste left on a beach that marks the highest point the sea reachesFloods, tides and currents UK a dirty mark around a bath or sink, left by the waterDirt and untidiness
(Definition of tidemark noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Browse related topics

You are looking at an entry to do with Floods, tides & currents, but you might be interested in these topics from the Seas, rivers & water topic area:

Word of the Day

throw caution to the wind/winds

to do something without worrying about the risk or negative results

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More