- a quantity of broken stone for foundations, revetments of embankments, etc.
- a foundation or wall of stones thrown together irregularly.
- to construct with or strengthen by stones, either loose or fastened with mortar.
Origin of riprap
First recorded in 1570–80; gradational reduplication of rap1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for riprap
Riprap holds dissolving banks, and overhanging trees are cut away.Old Times on the Upper Mississippi
George Byron Merrick
The riprap was merely a skin on each face, with loose spawls mixed with the earth.
The shore below the landing is a line of broken, ragged, slimy rocks, as if they had been dumped there for a riprap wall.Their Pilgrimage
Charles Dudley Warner
The outer slope is protected with riprap, composed of large bowlders.