noun (plural colluvia or -viums) see: lye Date: circa 1936 rock detritus and soil accumulated at the foot of a slope, colluvial adjective
COLLUVIUM
Meaning of COLLUVIUM in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012