We found 18 dictionaries that define the word slack water:

General (14 matching dictionaries)

1. slack water: Merriam-Webster
2. slack water: Oxford Learner's Dictionaries
3. slack water: American Heritage Dictionary of the English Language
4. slack water: Collins English Dictionary
5. slack water: Vocabulary.com
6. slack-water, slack water: Wordnik
7. slack-water: Wiktionary
8. slack water: Infoplease Dictionary
9. slack water: Dictionary.com
10. Slack water: Wikipedia, the Free Encyclopedia
11. slack water: Rhymezone
12. slack water: FreeDictionary.org
13. slack water: Mnemonic Dictionary
14. slack water: TheFreeDictionary.com

Computing (1 matching dictionary)

15. slack water: Encyclopedia

Tech (3 matching dictionaries)

16. Glossary of Meteorology (No longer online)
17. slack water: Master Mariner
18. Lake and Water Word Glossary (No longer online)

(Note: See slack_waters as well.)

Definitions from WordNet (slack water) ▸ noun:  the occurrence of relatively still water at the turn of the (low) tide Opposite: flood tide, rising tide, incoming tide Types: eddy, lagoon, pool, backwater, more... Phrases: slack water navigation, more... ▸ Words similar to slack water ▸ Usage examples for slack water ▸ Idioms related to slack water ▸ Wikipedia articles (New!) ▸ Words that often appear near slack water ▸ Rhymes of slack water ▸ Invented words related to slack water