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rip·rap

(rĭprăp′)

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 RAP¹.]

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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