marl
/mɑːrl/Definitions
1. noun
a mixture of clay and lime, used as mortar
“The old castle walls were made of marl and stone.”
2. verb
to soil or stain, especially with mud or clay
“The children’s boots were marled with mud after playing outside.”
3. verb
to mix or intermingle, especially colors
“The artist marled the paint to create a unique effect.”