Backfill(redirected from backfills)
Also found in: Dictionary, Financial.
Earth refilling a trench or an excavation around a building, bridge abutment, and the like.
Waste sand or rock used to support the mine roof after removal of ore.
Crushed stone or coarse soil placed around the foundation walls to provide drainage for water collecting in the soil behind the wall.
Soil which is replaced in an area that has been excavated previously.
1. Rough masonry built behind a facing or between two faces.
2. Filling over the extrados of an arch.
3. Brickwork in spaces between structural timbers. Also see nogging
4. Soil or crushed stone used to fill the space between the excavation or sheeting and the exterior of a structure, or around the foundation walls to provide means for water to drain away from a foundation.