stain

an act that brings discredit to the person who does it

a soiled or discolored appearance

“the wine left a dark stain”

a symbol of disgrace or infamy

make dirty or spotty, as by exposure to air; also used metaphorically

the state of being covered with unclean things

color for microscopic study

color with a liquid dye or tint

“people knew how to stain glass a beautiful blue in the middle ages”

a dye or other coloring material that is used in microscopy to make structures visible

produce or leave stains

“Red wine stains the table cloth”