subsoil
1. sub.soil \'s*b-.so.il\ n : the stratum of weathered material that underlies the surface soil 2. subsoil vt : to turn, break, or stir the subsoil of - sub.soil.er n
1. sub.soil \'s*b-.so.il\ n : the stratum of weathered material that underlies the surface soil 2. subsoil vt : to turn, break, or stir the subsoil of - sub.soil.er n