To add color to.
(Canadian spelling, acceptable) To convert black and white media to color by digital post production (as is often done in digital photography and in video special effects).
To treat (a microscopic specimen) with a dye, especially one that dyes specific features
To cause to seem inferior or soiled by comparison.
To coat a surface with a stain
To taint or tarnish someone's character or reputation
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.