peperino noun.
[pɛpǝ'ri:nǝʊ] L18.[Italian, from peper- (see PEPPERONI) + dim. suffix -ino (because it consists of small grains).]Geology. A light porous grey tuff containing fragments of leucite etc., found in the Albano hills, Italy; any pyroclastic deposit containing varied fragments.
[TahlilGaran] English Dictionary ▲