noun - mud, clay. I have also seen the verb clart, meaning to smear (as with mud or clay). "We will dook for apples and clart our faces with treacle, then dispatch the girls up to bed and hide from the doorbell with the lights out." - 'Hallowe'en lost its spirit with trick or treat', Inverness Courier, Scotland, 30 October 2007.
Also, comedic (English speaking) Welsh slang of indeterminate meaning.
noun - mud, clay. I have also seen the verb clart, meaning to smear (as with mud or clay). "We will dook for apples and clart our faces with treacle, then dispatch the girls up to bed and hide from the doorbell with the lights out." - 'Hallowe'en lost its spirit with trick or treat', Inverness Courier,
Scotland, 30 October 2007.