Definition of riprap in English:

riprap

Line breaks: rip¦rap
Pronunciation: /ˈrɪprap
 
/
North American

noun

[mass noun]
  • Loose stone used to form a foundation for a breakwater or other structure: the rock was used extensively for ballast and riprap [as modifier]: a riprap breakwater
    More example sentences
    • Both the pool and its protective lining of stone riprap must be properly sized.
    • Therefore, the texture of the bottoms of channels should be made rough with vegetation or riprap, and outlet structures should be properly designed with energy dissipaters.
    • A rock and log structure was placed within the riprap and willow structures to improve instream habitat for fish.

verb (ripraps, riprapping, riprapped)

[with object] Back to top  
  • Strengthen with riprap: incentives to keep landowners from riprapping riverbanks
    More example sentences
    • A creek near the back of the house was riprapped with large chunks of sidewalk that were jackhammered out
    • A large section of streambank was riprapped to prevent the landowner's septic system and 20 feet of severely slumping shoreline from washing into the brook.

Origin

mid 19th century: reduplication of rap1.

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