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backfill

[bak-fil]
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noun
  1. material used for refilling an excavation.
verb (used with object)
  1. to refill (an excavation).

Origin of backfill

First recorded in 1950–55; back2 + fill
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for backfilling

Historical Examples

  • These also were temporarily useless, because there had been no dredging in front of them, or backfilling in their rear.

    The Philippines Past and Present (Volume 2 of 2)

    Dean Conant Worcester


British Dictionary definitions for backfilling

backfill

verb
  1. (tr) to refill an excavated trench, esp (in archaeology) at the end of an investigation
noun
  1. the soil used to do this
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for backfilling

backfill

n.

1901 (as backfilling), from back (adj.) + fill (n.). The verb was in use by 1930.

Online Etymology Dictionary, © 2010 Douglas Harper