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 Historically, says Griggs, people along the California coastline have used armor, such as wooden, concrete, or riprap sea walls and other structures, to fortify eroding cliffs, while adding sand to beaches that are being washed away. Ramin Skibba, Smithsonian Magazine, 12 July 2021 Redfish continue to feed on shell bars, rock reefs, riprap and bridge channels; Berkley Gulp Alive Shrimp is one of the favorite baits, fished slowly on a light jighead. Frank Sargeant, al, 25 June 2021 The lake is the main attraction: boats on the horizon, storm waves thundering at the riprap. Paige Williams, The New Yorker, 28 June 2021 Renovations will include enhancing the riprap (rocky material) along the shoreline to improve erosion control, increasing the number of parking spaces and applying new aggregate (gravel) to all parking areas. Frank Sargeant, al, 21 Apr. 2021 Oversize redfish are active on the bars and riprap at the passes—large Tsunami swimbaits get them, as do live porgies or other baitfish in the 4 to 6 inch range. Frank Sargeant, al, 16 Apr. 2021 The ship also became lodged in arguably the worst place possible in the canal, in a narrow section less than 1,000 feet wide and lined with riprap, or chunks of rock dumped along shorelines to protect them. Los Angeles Times, 28 Mar. 2021 The riprap areas can be good for squarebills, jerkbaits and crankbaits—anything that can be bounced off the rocks. Frank Sargeant, al, 21 Feb. 2021 Sheepshead are becoming active on shell beds and rocky structure throughout the bay, around the gas rigs and riprap--live shrimp is the ticket; Frank Sargeant, al, 18 Dec. 2020

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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Last Updated

26 Jul 2021

Cite this Entry

“Riprap.” Dictionary, Merriam-Webster, Accessed 26 Jul. 2021.

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