|Origin:||Partly from Old French desteindre 'to discolor', from teindre 'to give something a different color', from Latin tingere ( TINGE2); partly from Old Norse steina 'to paint'|
1 [intransitive and transitive]
to accidentally make a mark on something, especially one that cannot be removed, or to be marked in this way:
Be careful you don't stain the carpet.
This tablecloth stains very easily.
Her fingers were stained yellow from years of smoking.
a cowboy hat stained with dust and sweat
to change the colour of something, especially something made of wood, by using a special liquid [↪ dye]:
We've decided to stain the shelves blue.
to damage the good opinion that people have about someone