资料来源 : pyDict

火山砾

资料来源 : Webster's Revised Unabridged Dictionary (1913)

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.

资料来源 : WordNet®

lapilli
     See {lapillus}