filter bed

noun

: a sand or gravel bed for filtering water or sewage

Word History

First Known Use

1828, in the meaning defined above

Time Traveler
The first known use of filter bed was in 1828

Rhymes for filter bed

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Browse Nearby Words

filter alum
filter bed
filter-bottom block
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Cite this Entry

“Filter bed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/filter%20bed. Accessed 5 Jul. 2026.

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Kids Definition

filter bed

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