noun (plural lapilli) Etymology: Latin, diminutive of lapis Date: 1747 a small stony or glassy fragment of lava ejected in a volcanic eruption
LAPILLUS
Meaning of LAPILLUS in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012