cauk or cawk /kök/

1. Chalk (dialect)
2. Barytes in platy crystals

• nigglingly
• nigglings
• niggly
• nigh
• nighed
• nighest
• nigh-hand
• nighing
• nighly
• nighness
• nighnesses
• nigh on
• nighs
• night
• night air
• night-ape
• night-apes
• night-attire
• night-bell
• night-bells
• nightbird
• nightbirds
• night-blind
• night-blindness
• night-blooming cereus