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DictionarywashingSurface layer
noun

washing

A thin layer of material deposited on a surface.

A thin washing of silt covers the path after each flood.

Etymology
washOld Englishto wash
+ingEnglishact or result

Washing can leave a film of deposited material. The noun extends from the liquid process to the thin layer produced on the surface.

More examples

  • The receding water leaves a washing of fine sand on the steps.
  • A pale washing of blue paint softens the wall's color.
  • A washing of dust dulls the leaves beside the road.

Forms

washing · washings

Similar words

coating
Coating is broader and can describe a much thicker layer.
deposit
Deposit emphasizes material left behind by water or another process.
film
Film usually suggests an especially thin, continuous surface layer.