1. (n.)stain a discoloration produced by foreign matter having penetrated into a material.
2. stain a patch of color different from that of the basic color, as on the body of an animal.
3. stain a cause of reproach; stigma: a stain on one's reputation.
4. stain a dye made into a solution for coloring woods, textiles, etc.
5. stain a reagent or dye used in treating a specimen for microscopic examination.
6. (v.t.)stain to discolor with spots or streaks of foreign matter.
7. stain to color or dye (wood, cloth, etc.).
8. stain to dye (a microscopic specimen) in order to give distinctness, produce contrast of tissues, etc.
9. stain to bring reproach or dishonor upon; blemish.
10. (v.i.)stain to produce a stain.
11. stain to become stained: a fabric that stains easily.
Etymology: (1350–1400; ME steynen < ON steina to paint; in some senses aph. form of
Definition of 'Stain'
Princeton's WordNet
1. (noun)stain, discoloration, discolouration a soiled or discolored appearance "the wine left a dark stain"
2. (noun)stain (microscopy) a dye or other coloring material that is used in microscopy to make structures visible
3. (noun)dirt, filth, grime, soil, stain, grease, grunge the state of being covered with unclean things
4. (noun)mark, stigma, brand, stain a symbol of disgrace or infamy "And the Lord set a mark upon Cain"--Genesis
5. (verb)blot, smear, smirch, spot, stain an act that brings discredit to the person who does it "he made a huge blot on his copybook"
6. (verb)stain color with a liquid dye or tint "Stain this table a beautiful walnut color"; "people knew how to stain glass a beautiful blue in the middle ages"
7. (verb)stain produce or leave stains "Red wine stains the table cloth"
8. (verb)tarnish, stain, maculate, sully, defile make dirty or spotty, as by exposure to air; also used metaphorically "The silver was tarnished by the long exposure to the air"; "Her reputation was sullied after the affair with a married man"
9. (verb)stain color for microscopic study "The laboratory worker dyed the specimen"
6. (verb)Stain to discolor by the application of foreign matter; to make foul; to spot; as, to stain the hand with dye; armor stained with blood
7. (verb)Stain 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 stainglass
8. (verb)Stain to spot with guilt or infamy; to bring reproach on; to blot; to soil; to tarnish
9. (verb)Stain to cause to seem inferior or soiled by comparison
10. (verb)Stain to give or receive a stain; to grow dim
Definitions of Stain 
Afrikaans: vlek
Arabic: يُلَطِّخ
Bulgarian: ликьосвам
Brazilian: manchar
Czech: potřísnit
German: beschmutzen
Danish: misfarve
Greek: λεκιάζω
Estonian: plekki jätma
Farsi: لك شدن
Finnish: tahrata
French: tacher
Hebrew: לְהַכתִים
Hindi: दाग
Croatian: zamrljati
Hungarian: bepiszkít
Indonesian: mengotori
Icelandic: bletta
Italian: macchiare
Japanese: しみをつける
Korean: 얼룩을 남기다
Lithuanian: (iš)tepti
Latvian: notraipīt
Malay: mengotorkan
Dutch: vlekken
Norwegian: sette varige flekker
Polish: plamić
Portuguese: manchar
Romanian: a păta
Russian: пачкать
Slovak: zašpiniť, pofŕkať
Slovenian: zamazati
Serbian: uflekati
Swedish: fläcka, missfärga
Thai: เป็นคราบ; เปราะเปื้อน
Turkish: lekelemek
Taiwanese: 污漬(衣服)
Ukrainian: плямувати, бруднити
Urdu: دھبا ڈالنا
Vietnamese: gây vết, làm biến màu
Chinese: 沾污（衣服）
