Found 2 items, similar to lapilli.
English → English (WordNet) Definition: lapilli lapilli See lapillus
English → English (gcide) Definition: Lapilli Lapilli \La*pil"li\, n. pl. [L. lapillus a little stone, dim. of lapis stone.] (Min.) Volcanic ashes, consisting of small, angular, stony fragments or particles. [1913 Webster]