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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.



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 an interview, San Jose de Buenavista Mayor Elmer Untaran said he met recently with the officials of the Arbor Star and their insurer and they promised to repair the damaged riprap and the toppled electrical posts caused by the drifting of the barge.
Researchers developed a new, advanced computational methodology for assessing the failure risk of geometrically complex riprap installations.
"This expansion in partnership with Chaney Enterprises aligns with our strategic growth goal of being the leading blended media and riprap provider in the Chesapeake Bay watershed."
Matthew Taylor of GZA said the rock-facing does not comply with Massachusetts Department of Transportation or city of Worcester standards for riprap construction.
In the Mississippi's many numbered pools downriver, everybody I spoke with noted movement by crappies from wood, wing dams, and other current breaks to rocky shorelines and riprap as temperatures drop into the 60[degrees]F range.
The culvert served as good training since the Soldiers had to dig the trench, compact the bottom, lay the large concrete pipe, compact the fill, and emplace riprap at the entry and exit sides to encourage water to flow into the culvert so that it would not undermine their work.
Riprap, Gary Snyder's first book, came to be published in 1959, the same year as Robert Lowell's Life Studies.
"Some fish traveled up and down the lake, while others didn't move much at all." Those tucked into timber or along shoreline riprap were least likely to move long distances.
Homeowners went to Lane County to allow a zone change that would permit them to build a "revetment," or "riprap" rock structure to protect the cove.
The design also included filter stone and riprap, installed at the toe of the dam, to control seepage and prevent erosion.
Jaw crushers are suitable for processing concrete, stone and demolition material, such as brick and block, and can produce larger products such as riprap. Jaw crushers are not normally well suited for crushing asphalt, as asphalt can bridge and stick inside the jaw crusher chamber.
A riprap design creates a softer edge, connecting the large expanses of grass, open lawns, terraces, groves and overlooks.