stain

noun

1.
a soiled or discolored appearance
spreckle wem discoloration discolouration
Derived from:
stain
2.
(microscopy) a dye or other coloring material that is used in microscopy to make structures visible
Derived from:
stain
3.
anything regarded as making something unclean
deech dirty hore soss dirt filth grease grime grunge soil
Derived from:
stain
4.
a symbol of disgrace or infamy
brand mark stigma
Derived from:
stain
5.
an act that brings discredit to the person who does it
blot smear smirch spot
Derived from:
stain