caliche /ka-lēˈchā/

1. Sand containing Chile saltpetre
2. A crust of calcium carbonate that forms on the surface of the soil in arid regions

• unworthiness
• unworthinesses
• unworths
• unworthy
• unwound
• unwoundable
• unwounded
• unwove
• unwoven
• unwrap
• unwrapped
• unwrapping
• unwraps
• unwreaked
• unwreathe
• unwreathed
• unwreathes
• unwreathing
• unwrinkle
• unwrinkled
• unwrinkles
• unwrinkling
• unwritable
• unwrite
• unwrites