alum rock

noun

: alunite

Word History

First Known Use

circa 1637, in the meaning defined above

Time Traveler
The first known use of alum rock was circa 1637

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Dictionary Entries Near alum rock

a lump in one's throat

alum rock

alumroot

See More Nearby Entries 

Cite this Entry

“Alum rock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alum%20rock. Accessed 22 Dec. 2024.

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