riprap

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rip·rap

 (rĭp′răp′)
n.
1. Piled broken stones used as a foundation or to stabilize an easily eroded bank or slope.
2. An assemblage of such broken stones.
tr.v. rip·rapped, rip·rap·ping, rip·raps
1. To construct a riprap in or on.
2. To strengthen with a riprap.

[Reduplication of rap.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

rip•rap

(ˈrɪpˌræp)

n.
1. a quantity of broken stone for foundations, revetments of embankments, etc.
2. a foundation or wall of stones thrown together irregularly.
[1570–80; gradational reduplication of rap1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
In the last meeting between the city government and the DPWH under the Duterte administration, the agency said it would conduct a structural analysis of the existing ripraps in the city, he added.
For the third time this month, a riverbank wall or riprap collapsed amid continuous rains in Marikina City, endangering homes and prompting the local government to call the attention of the Department of Public Works and Highways (DPWH) about the quality of its projects.