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

• tooart
• tooarts
• too bad
• too big for one's boots
• too big for one's breeches
• toodle-oo
• toodle-pip
• too funny for words
• took
• tool
• toolbag
• toolbags
• toolbar
• toolbars
• toolbox
• toolboxes
• tooled
• tooled up
• tooler
• toolers
• toolhouse
• toolhouses
• tooling
• toolings
• toolkit