caliche
1. [ noun ] (geology) crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
Synonyms: hardpan
Related terms: soil
2. [ noun ] (geology) nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru
Related terms: rock
Similar spelling:   caleche
  cliche
  Calise
  calico
  chalice
  Calles
  Callejo
  clichy
  caulk