A stain is a discoloration that can be clearly distinguished from the surface, material, or medium it is found upon. They are caused by the chemical or physical interaction of two dissimilar materials.

STAIN definition: a discoloration produced by foreign matter having penetrated into or chemically reacted with a material; a spot not easily removed. See examples of stain used in a sentence.

The tomato sauce left a stain on the tablecloth. A stain is also a thin, oily liquid used to change the color of wood.

These nouns denote a mark of discredit or disgrace, as on one's good name: a stain on his honor; a blot on an otherwise clean police record; the brand of cowardice; the stigma of ignominious defeat; the …

Definition of stain noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

The meaning of STAIN is to suffuse with color. How to use stain in a sentence.

a dye made into a solution for coloring woods, textiles, etc.: [uncountable] Try using stain on the rocking chair. [countable] several wood stains to choose from: red, dark brown, or light brown.