1. stain - Noun
2. stain - Verb
To discolor by the application of foreign matter; to make foul; to spot; as, to stain the hand with dye; armor stained with blood.
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.
To spot with guilt or infamy; to bring reproach on; to blot; to soil; to tarnish.
To give or receive a stain; to grow dim.
A discoloration by foreign matter; a spot; as, a stain on a garment or cloth.
A natural spot of a color different from the gound.
Taint of guilt; tarnish; disgrace; reproach.
Cause of reproach; shame.
A tincture; a tinge.
Source: Webster's dictionaryEach word seemed to me an unnecessary stain on silence of nothingness. Samuel Beckett
After Nixon resigned in 1974, he engaged in a very aggressive war with history, attempting to wipe out the Watergate stain and memory. Happily, history won, largely because of Nixon's tapes. Bob Woodward
It is one of the severest tests of friendship to tell your friend his faults. So to love a man that you cannot bear to see a stain upon him, and to speak painful truth through loving words, that is friendship. Henry Ward Beecher
Do not fear a stain that disappears with water. Puerto Rican Proverb
Even doubtful accusations leave a stain behind them. Danish Proverb
A common blot is held no stain. Latin Proverb