clayfilm
nounUK /ˈkleɪ.fɪlm/
US /ˈkleɪ.fɪlm/
A thin layer of clay that forms on the ground or on things.
After the rain, a clayfilm covered the garden path.
OTHER MEANINGS
2. A thin sheet of clay used in art or craft projects.
She pressed a clayfilm onto the pottery to add texture.
3. A protective coating made from clay applied to a surface.
The sculptor brushed a clayfilm over the model to keep it moist.
4. A very thin deposit of clay left behind by water.
The riverbank showed a clayfilm where the flood had dried.