Terms of the Trade: What Does It Mean to Backfill? Terms of the Trade: What Does It Mean to Backfill?
In construction terms, backfilling is a simple term. It refers to filling an excavated hole with the material originally dug out of it. The word backfill can also refer to the material itself that fills the hole or trench. Backfilling is often done when working around building foundations, underground structures, or landscaping.