• synonyms


  1. a quantity of broken stone for foundations, revetments of embankments, etc.
  2. a foundation or wall of stones thrown together irregularly.
Show More
verb (used with object), rip·rapped, rip·rap·ping.
  1. to construct with or strengthen by stones, either loose or fastened with mortar.
Show More

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

Historical Examples of 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.