caliche
| 1. |
(noun) nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru |
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Related Words: rock, stone |
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| 2. |
(noun) crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions |
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Synonyms: hardpan |
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Related Words: dirt, soil |
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