Definitions for "Rip-rap"
Stones, chunks of concrete, or other debris on an embankment slope, or stream side slope, generally used to prevent erosion.
Broken rock, deposited loosely on a riverbed or on the banks to help prevent erosion. It is also used to form breakwaters and embankments.
A loose foundation or an arrangement of broken stone in water or soft terrain used to help prevent erosion. The material used for this is known as rap or rapping.