rip·​rap | \ ˈrip-ˌrap How to pronounce riprap (audio) \

Definition of riprap

 (Entry 1 of 2)

1 : a foundation or sustaining wall of stones or chunks of concrete thrown together without order (as in deep water) also : a layer of this or similar material on an embankment slope to prevent erosion
2 : material used for riprap


riprapped; riprapping; ripraps

Definition of riprap (Entry 2 of 2)

transitive verb

1 : to form a riprap in or upon
2 : to strengthen or support with a riprap

Examples of riprap in a Sentence

Recent Examples on the Web: Noun

Just beyond the northern reach of the park, there’s a grassy mound—bearded in stony riprap to prevent erosion--that overlooks the East River: an older public park. Julie V. Iovine, WSJ, "Sweet Design on the Brooklyn Waterfront," 30 June 2018 The city in January 2015 approved of the riprap but then reversed its position a few months later, state records show., "Decks now collapsing on Oregon beach house at center of riprap battle," 27 Apr. 2018 The concrete guide wall is on top of 80-year-old wood pilings and riprap. Meg Jones, Milwaukee Journal Sentinel, "The Mississippi River lock and dam system is critical to the economy. But it's falling apart fast.," 1 June 2018 Topwaters work over the beds, above hydrilla and coontail that has not topped out and along hard edges like seawalls and riprap banks. Joe Songer,, "See video of a turkey hunter calling up a bobcat," 30 Apr. 2018 On Lower Shaker Lake, dam seepage needs to be shored up, and additional erosion control will be going in, consisting of river rock above the normal water line and limestone riprap below. Thomas Jewell,, "Shaker Lakes dam projects will close down walkways for over a year," 7 Feb. 2018 Try in the riprap areas using crank baits, plastic worms or spinner baits. Tyler Mahoney Special To The Star, kansascity, "Fishing report: Uneven weather makes for mixed results on the water | The Kansas City Star," 28 Mar. 2018 Blue catfish over 60 pounds are present; bass – good in the riprap areas using crank baits, plastic worms or spinner baits. Tyler Mahoney, kansascity, "Fishing report: Looking for hot spots? Here's where the fish are biting | The Kansas City Star," 14 Mar. 2018 Smallmouth poor, but can be caught along the shoreline and riprap face of the dam using spoons and shallow crankbaits; white bass fair lakewide on jigs and minnows. Tyler Mahoney, kansascity, "Muddy water in most lakes makes fishing a challenge | The Kansas City Star," 28 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'riprap.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of riprap


1822, in the meaning defined at sense 1


1837, in the meaning defined at sense 1

History and Etymology for riprap


obsolete riprap sound of rapping

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Statistics for riprap

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Time Traveler for riprap

The first known use of riprap was in 1822

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More from Merriam-Webster on riprap

Rhyming Dictionary: Words that rhyme with riprap

Comments on riprap

What made you want to look up riprap? Please tell us where you read or heard it (including the quote, if possible).


not to be persuaded, moved, or stopped

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