rip-rap
noun
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
Word Origin for rip-rap
C19: reduplication of
rap
1
Words nearby rip-rap
rip into,
rip off,
rip on,
rip up,
rip van winkle,
rip-rap,
rip-roaring,
riparian,
riparian right,
ripcord,
ripe
Example sentences from the Web for rip-rap
When the shield had traveled 25 ft. through the rip-rap, the piles which support the bulkhead were met.
Want to rip-rap the outer edge of this water hole, so the bank will not cave in and undo all our work!
The Pony Rider Boys in New Mexico |Frank Gee PatchinThe heavy masonry bulkhead was supported on piles and rip-rap, as shown in Fig. 18.