riprap

2 entries found for riprap.
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riprap[1,noun] riprap[2,transitive verb]

Main Entry: ¹rip·rap
Pronunciation: 'rip-"rap
Function: noun
Etymology: obsolete riprap sound of rapping
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