Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun caliche

2 senses of caliche

Sense 1
caliche, hardpan -- (crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions)
       => soil, dirt -- (the part of the earth's surface consisting of humus and disintegrated rock)

Sense 2
caliche -- (nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru)
       => rock, stone -- (material consisting of the aggregate of minerals like those making up the Earth's crust; "that mountain is solid rock"; "stone is abundant in New England and there are many quarries")