1. caliche, hardpan, soil, dirt

usage: crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions

2. caliche, rock, stone

usage: nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru

WordNet 3.0 Copyright © 2006 by Princeton University.
All rights reserved.

See also: caliche (Dictionary)