from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A loose assemblage of broken stones erected in water or on soft ground as a foundation.
  • n. The broken stones used for such a foundation.
  • transitive v. To construct a riprap in or on.
  • transitive v. To strengthen with a riprap.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Rocks or other materials used to shore up an embankment, deter or prevent erosion, guide shipping, or serve as a temporary mooring.
  • v. To form a riprap in or upon.

from the GNU version of the Collaborative International Dictionary of English

  • n. A foundation or sustaining wall of stones thrown together without order, as in deep water or on a soft bottom, or in a river channel.
  • transitive v. To form a riprap in or upon.

from The Century Dictionary and Cyclopedia

  • n. In engineering: Broken stones used for walls, beds, and foundations: sometimes used attributively.
  • n. A foundation or parapet of stones thrown together without any attempt at regular structural arrangement, as in deep water or on a soft bottom.


from The American Heritage® Dictionary of the English Language, 4th Edition

Reduplication of rap1.


  • Plus, I learned the word riprap-previously used in the


  • The boulders, called riprap, are designed to protect erosion at the base of the 15-foot concrete structure,

    The Daily News - News

  • Crews working for Skagit County broke up the dike, also known as riprap, late last month as part of a $1.2 million project that will stretch into next year. Local, Sports, Business and Entertainment News

  • Fish this around structure such as riprap or downed timber.

    Bomber Fat A BO6F

  • Follow the structure with a crisscross pattern and look for features along the edge of the roadbed that bass find inviting, such as riprap, boulders, stumps, fence posts, and brush.

    Hit the Road for Bass

  • DNR staff calculated the energy level for the site and determined that less harmful shoreline protection measures such as riprap or biostabilization are appropriate.

    The Fond du Lac Reporter Latest Headlines

  • Rocky areas such as riprap or gravel bars also tend to harbor crappie, especially when the fish go shallower.

    The Lubbock Avalanche-Journal:Today's Headlines

  • What the citizens gathered in protest on Saturday and the many at home who agree with them have neglected to acknowledge is that the "riprap" rock in question could be put to good use for the people of Provo.

    BYU NewsNet : Home

  • I was fishing a bass tournament on ky. lake with a man when he pulled up to a riprap point were a bank fisherman was fishing and started casting away.

    Florida Man Charged In Fish Fight

  • Best fish of any kind I've caught in the past two years was a monster drum that hit a 5-inch Tikki-Stick I was throwing along some riprap in a local lake.

    Talking Trash


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  • A word (rubble used to stabilize riverbanks) that I know solely through Gary Snyder's use of it.

    December 10, 2006