We found 27 dictionaries that define the word high water mark:

General (19 matching dictionaries)

1. high-water mark: Merriam-Webster
2. high-water mark: Oxford Learner's Dictionaries
3. high-water mark: American Heritage Dictionary of the English Language
4. high-water mark, high-water mark: Collins English Dictionary
5. high-water mark: Vocabulary.com
6. high-water mark: Wordnik
7. high water mark: Cambridge Advanced Learner's Dictionary
8. high-water mark: Wiktionary
9. high-water mark: The Wordsmyth English Dictionary-Thesaurus
10. high-water mark: Infoplease Dictionary
11. High-water mark, high-water mark, high water mark: Dictionary.com
12. High-water mark (computer security), High water mark (disambiguation), High water mark: Wikipedia, the Free Encyclopedia
13. high-water mark: Rhymezone
14. high-water mark, high water mark: FreeDictionary.org
15. high-water mark: Mnemonic Dictionary
16. high-water mark: TheFreeDictionary.com
17. high water mark: Longman Dictionary of Contemporary English

Business (4 matching dictionaries)

18. Bouvier's Law Dictionary 1856 Edition (No longer online)
19. High-Water Mark: Investopedia
20. High water mark: Legal dictionary
21. high-water mark: Financial dictionary

Computing (1 matching dictionary)

22. high-water mark: Encyclopedia

Science (1 matching dictionary)

23. High-Water Mark: Eric Weisstein's World of Mathematics

Tech (2 matching dictionaries)

24. DOD Dictionary of Military Terms (No longer online)
25. Lake and Water Word Glossary (No longer online)

Definitions from Wikipedia (High water mark) ▸ noun:  A high water mark is a point that represents the maximum rise of a body of water over land. Phrases: ordinary high water mark, more... ▸ Words similar to high water mark ▸ Usage examples for high water mark ▸ Idioms related to high water mark ▸ Wikipedia articles (New!) ▸ Words that often appear near high water mark ▸ Rhymes of high water mark ▸ Invented words related to high water mark