0 to fill a hole created by digging or drilling, especially using some of the material that has been taken out:
2 material used to fill a hole that has been created by digging, etc.:
Some of the fluorite produced from the lead mines was used as backfill underground.
Follow-up monitoring in 1992-93 focused on evaluating fuel migration and on assessing backfill stability.
Is not the problem that too often the answer is to backfill—to put a trench in—rather than to resurface the road?
Complete installation of retrofit dowels, with dowel bars and backfill placed prior to reopening the lane to public traffic.
Already, the coal-depleted portions of the site have been subject to rebeautification, with pits being reclaimed as lakes or being filled-in with backfill.
The caulking filler is used to prevent backfill material from flowing into the joint or crack.
To compact the foundation's backfill, a herd of sheep was driven around the structure 100 times.
An example would be that the silt backfill of an underground drain would form some time after the ground immediately above it.
There are also volunteer firefighters who can backfill the station or respond to incidents with additional apparatus, when needed.
