riprap

[ rip-rap ]

noun
  1. a quantity of broken stone for foundations, revetments of embankments, etc.

  2. a foundation or wall of stones thrown together irregularly.

verb (used with object),rip·rapped, rip·rap·ping.
  1. to construct with or strengthen by stones, either loose or fastened with mortar.

Origin of riprap

1
First recorded in 1570–80; gradational reduplication of rap1

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How to use riprap in a sentence

British Dictionary definitions for rip-rap

rip-rap

noun
  1. civil engineering broken stones loosely deposited in water or on a soft bottom to provide a foundation and protect a riverbed or river banks from scour: used for revetments, embankments, breakwaters, etc

Origin of rip-rap

1
C19: reduplication of rap 1

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