filter bed

noun

: a sand or gravel bed for filtering water or sewage

First Known Use

1828, in the meaning defined above

Time Traveler

The first known use of filter bed was in 1828

See more words from the same year

Style

“Filter bed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/filter%20bed. Accessed 2 Dec. 2022.

Copy Citation

filter bed

: a bed of sand or gravel for filtering water or sewage

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