Definition of "stain"
noun:
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A discoloured spot or area.
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A blemish on one's character or reputation.
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A substance used to soak into a surface and colour it.
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A reagent or dye used to stain microscope specimens so as to make some structures visible.
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verb:
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To discolour something.
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To taint or tarnish someone's character or reputation.
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To coat a surface with a stain.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
To treat a microscope specimen with a dye.
from Wiktionary, Creative Commons Attribution/Share-Alike License
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