Found 2 items, similar to hardpan.
English → English (WordNet) Definition: hardpan hardpan n : crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions [syn: caliche]
English → English (gcide) Definition: Hardpan Hardpan \Hard"pan`\ (h[aum]rd"p[a^]n), n. The hard substratum. Same as Hard pan, under Hard, a. [1913 Webster]