back·​fill ˈbak-ˌfil How to pronounce backfill (audio)
backfilled; backfilling; backfills

transitive + intransitive

: to refill (something, such as an excavation) usually with excavated material
backfill a trench
backfill noun

Word History

First Known Use

1874, in the meaning defined above

Time Traveler
The first known use of backfill was in 1874

Dictionary Entries Near backfill

Cite this Entry

“Backfill.” Dictionary, Merriam-Webster, Accessed 30 May. 2023.

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