- The definition of backfill is material used to refill a hole, usually what was previously dug out of the hole.
Dirt and gravel are examples of backfill.
- Backfill is defined as to return soil and other materials to a hole after it was dug.
An archeologist that puts dirt back into a trench that was dug is an example of to backfill.
transitive verbback·filled, back·fill·ing, back·fills
- To refill (an excavated area) with such material.
- To fill (a job or position that has been vacated).
(third-person singular simple present backfills, present participle backfilling, simple past and past participle backfilled)
- To refill a hole with the material dug out of it.
- (archaeology) To refill an excavation unit to restore the former ground surface and or to preserve the unit and make it recognizable as having been excavated.
- (US) To provide reserve support.
- (US) To replenish or restock due to attrition or loss.
- The company backfilled Joe's position after he was terminated.
(countable and uncountable, plural backfills)