[It.; ad. L. lapillus: see LAPILLI.] Matter ejected from volcanoes in the form of lapilli.
1811. Pinkerton, Petral., I. 48. Mountains … formed of heaps of scoriæ, fragments of lava and of lapillo.
1862. G. P. Scrope, Volcanos, 57. The lapillo is generally of a deep-black colour.
