Riprap

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riprap

[′rip‚rap]
(civil engineering)
A foundation or revetment in water or on soft ground made of irregularly placed stones or pieces of boulders; used chiefly for river and harbor work, for roadway filling, and on embankments.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Riprap

Irregularly broken and random-sized large pieces of quarry rock used for foundations; a foundation or parapet of stones thrown together without any attempt at regular structural arrangements.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

riprap

1. Irregularly broken and random-sized large pieces of quarry rock; individual stones ranging from very large (2 to 3 cu yd, approx. 1.5 to 2.3 cu m) to small (1/2 cu ft, approx. 0.014 cu m); used for foundations and revetments.
2. A foundation or parapet of stones thrown together without any attempt at regular structural arrangement.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Next, two layers of large 24-36-inch diameter rip rap was placed parallel to the bank.