Found 2 items, similar to Undersoil.
English → English (WordNet) Definition: undersoil undersoil n : the layer of soil between the topsoil and bedrock [syn: subsoil]
English → English (gcide) Definition: Undersoil Undersoil \Un"der*soil`\, n. The soil beneath the surface; understratum; subsoil. [1913 Webster]