To tarnish (reputation, character, etc.); to defame.
To spoil the appearance of.
A moral defect; a character flaw.
A small flaw which spoils the appearance of something, a stain, a spot.
To taint or tarnish someone's character or reputation
To cause to seem inferior or soiled by comparison.
To coat a surface with a stain
To treat (a microscopic specimen) with a dye, especially one that dyes specific features
To discolour.
To become stained; to take a stain.
A reagent or dye used to stain microscope specimens so as to make some structures visible.
A discoloured spot or area.
Any of a number of non-standard tinctures used in modern heraldry.
A blemish on one's character or reputation.
A substance used to soak into a surface and colour it.