to mark, discolour, or soil (something)
literary to suffuse (an area) with colour
to colour (wood or a biological specimen) by using processes or dyes affecting the material itself
literary to taint or dishonour (a person, reputation, etc)
to become stained
to cause staining
stainability /-ʹbiliti/ noun
stainable adj
stainer noun
[Middle English steynen, shortened from disteynen, from Old French desteindre to discolour, from dis- + Latin tingere to wet, dye]