noun see: sole Date: 1949 any of a group of azonal soils consisting chiefly of imperfectly consolidated material and having no clear-cut and specific morphology
REGOSOL
Meaning of REGOSOL in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012