riprap noun & verb. ['rɪprap] L16.
[Redupl. of RAP noun¹, verb¹.]
A. noun.
1. a. A sound resembling that caused by a rapid succession of blows; a sharp blow. L16-E17.
b. A kind of detonating firework. Also, the sound of fireworks detonating. L19.

2. Loose stone used to form a foundation for a breakwater or other structure; a structure made of this. Orig. US. M19.
b. verb trans. Infl. -pp-.
1. Construct a breakwater or other work with a foundation of loose stone. M19.

2. Of a curling-stone: knock against (another stone). Scot. rare. M19.

[TahlilGaran] English Dictionary ▲