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

• nulliparities
• nulliparity
• nulliparous
• nullipore
• nullipores
• nulli secundus
• nullities
• nullity
• null-modem cable
• null-modem cables
• nullness
• nullnesses
• nulls
• num.
• NUM
• Num.
• NUMAST
• numb
• Numb.
• numbat
• numbats
• numbed
• number
• number-cruncher
• number-crunching