The Collaborative International Dictionary of English v.0.48:

Blot \Blot\, v. t. [imp. & p. p. Blotted; p. pr. & vb. n.
   Blotting.] [Cf. Dan. plette. See 3d Blot.]
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   1. To spot, stain, or bespatter, as with ink.
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            The brief was writ and blotted all with gore.
                                                  --Gascoigne.
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   2. To impair; to damage; to mar; to soil.
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            It blots thy beauty, as frosts do bite the meads.
                                                  --Shak.
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   3. To stain with infamy; to disgrace.
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            Blot not thy innocence with guiltless blood. --Rowe.
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   4. To obliterate, as writing with ink; to cancel; to efface;
      -- generally with out; as, to blot out a word or a
      sentence. Often figuratively; as, to blot out offenses.
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            One act like this blots out a thousand crimes.
                                                  --Dryden.
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   5. To obscure; to eclipse; to shadow.
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            He sung how earth blots the moon's gilded wane.
                                                  --Cowley.
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   6. To dry, as writing, with blotting paper.
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   Syn: To obliterate; expunge; erase; efface; cancel; tarnish;
        disgrace; blur; sully; smear; smutch.
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