# pierre perdu

> English word · Noun

## Definitions
1. Blocks of stone or concrete heaped loosely in the water to make a foundation (as for a sea wall), a breakwater, etc.

## Etymology
From French pierre perdue, literally "lost stone".

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