Definitions for calichekəˈli tʃi
Random House Webster's College Dictionary
a surface deposit of sodium nitrate found in South American desert areas: formerly a major source of chemical fertilizer.
a zone of calcium carbonate or other carbonates in soils of semiarid regions.
Ref: Compare hardpan.
Origin of caliche:
1855–60; < Sp: flake of lime
crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru
A crude form of sodium nitrate from South America; used as a fertilizer
A layer of hard clay subsoil; hardpan