to back and fill
1
8.6
- phrasal verb
- Specialized
:
rellenar
- They decided to back and fill the area after discovering a mistake in the foundation.
- go back and fill
Examples
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After you have your central piece, go back and fill in any gaps with additional smaller flowers or other elements.
Blog text (15) -
We need to back and fill the trenches before the rain starts.
-
The contractor will back and fill around the pipes to ensure stability.
Synonyms
90
1.3
Close a hole or gap by putting material into it
63
1.3
To put more of something into a container that is empty or nearly empty
1
4.3
To fill a hole or trench with soil after work is done
1
5.6
To fill a space with material or build on empty land between buildings in a city
To put material into a hole in the road to make it level
Surface Forms
Morphology
The meaning is partially derivable because learners who know 'back' in the sense of 'backwards' or 'again' and 'fill' ('make full') can infer a sense of refilling or restoring (as in refilling a trench). However, the expression is technical and the provided sense ('make small adjustments' or the construction-specific 'backfill') is more specialized and not fully predictable from the basic meanings, so a B1 learner may not grasp the precise procedural or idiomatic usages without exposure.
Etymology
Back and fill comes from building work. When a trench is dug, workers would push dirt back into the hole and then fill it again to fix or adjust the ground, so the phrase now means 'to make small adjustments' or 'to refill or repair trenches'.