Stain

What is Stain?

Stain definition and meaning on Dictionary terms:
noun

a discoloration produced by foreign matter having penetrated into or chemically reacted with a material; a spot not easily removed.
a natural spot or patch of color different from that of the basic color, as on the body of an animal.
a cause of reproach; stigma; blemish: a stain on one’s reputation.
coloration produced by a dye that penetrates a substance, as wood.
a dye made into a solution for coloring woods, textiles, etc.
a reagent or dye used in treating a specimen for microscopic examination.