# rockfill

> English word · Noun

## Definitions
1. A dam's embankment of compacted free-draining granular earth, often containing rocks, with an impervious zone.

## Etymology
From rock + fill.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/rockfill