Meaning of STAIN in English
( v. t. )
To color, as wood, glass, paper, cloth, or the like, by processess affecting, chemically or otherwise, the material itself; to tinge with a color or colors combining with, or penetrating, the substance; to dye; as, to stain wood with acids, colored washes, paint rubbed in, etc.; to stain glass.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012