cauk or cawk /kök/

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

• thwackers
• thwacking
• thwackings
• thwacks
• thwaite
• thwaites
• thwart
• thwarted
• thwartedly
• thwarter
• thwarters
• thwarting
• thwartingly
• thwartings
• thwartly
• thwarts
• thwartship
• thwartships
• thwartways
• thwartwise
• thy
• Thyestean
• Thyestian
• thyine
• thylacine