blackwater

noun

: any of several diseases (such as blackwater fever) characterized by dark-colored urine

Word History

First Known Use

1732, in the meaning defined above

Time Traveler
The first known use of blackwater was in 1732

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Cite this Entry

“Blackwater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blackwater. Accessed 7 Jul. 2026.

Medical Definition

: any of several diseases (as blackwater fever or Texas fever) characterized by dark-colored urine

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