SUBSOIL


Meaning of SUBSOIL in English

/ ˈsʌbsɔɪl; NAmE / noun

[ U ] the layer of soil between the surface of the ground and the hard rock underneath it

—compare topsoil

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.