blot

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A spot or a stain caused by a discoloring substance: a blot of paint.
2. n. A stain on one's character or reputation; a disgrace. See Synonyms at stain.
3. n. The Northern, Southern, or Western blot analyses.
4. v. To spot or stain, as with a discoloring substance.
5. v. To bring moral disgrace to.
6. v. To obliterate (writing, for example).
7. v. To make obscure; hide: clouds blotting out the moon.
8. v. To destroy utterly; annihilate: War blotted out their traditional way of life.
9. v. To soak up or dry with absorbent material.
10. v. To spill or spread in a spot or stain.
11. v. To become blotted, soaked up, or absorbed.
12. n. Games An exposed piece in backgammon.
13. n. Archaic A weak point.

Century Dictionary and Cyclopedia

1. n. A spot or stain, as of ink on paper; a blur; a disfiguring stain or mark: as, “one universal blot,”
2. n. A scoring out; an erasure or obliteration, as in a writing.
3. n. A spot upon character or reputation; a moral stain; a disgrace; a reproach; a blemish.
4. n. Imputed disgrace or stain; defamation: as, to cast a blot upon one's character.
5. To spot, stain, or bespatter, as with ink, mud, or any discoloring matter.
6. Figuratively, to stain as with disgrace or infamy; tarnish; disgrace; disfigure.
7. To obliterate so as to render invisible or not distinguishable, as writing or letters with ink: generally with out: as, to blot out a word or a sentence.
8. Hence To efface; cause to be unseen or forgotten; destroy; annihilate: followed by out: as, to blot out a crime, or the remembrance of anything.
9. To darken or obscure; eclipse.
10. To dry by means of blotting-paper or the like.
11. To obliterate something written.
12. To become blotted or stained: as, this paper blots easily.
13. n. In backgammon: A single exposed piece which is liable to be forfeited or taken up.
14. n. The exposure of a piece in this way.

Wiktionary

1. n. A blemish, spot or stain made by a coloured substance.
2. n. by extension A stain on someone's reputation or character; a disgrace.
3. n. biochemistry The Southern blot analysis (and derived Northern and Western) analytical techniques.
4. n. backgammon an exposed piece in backgammon.
5. v. transitive to cause a blot (on something) by spilling a coloured substance.
6. v. intransitive to soak up, or absorb liquid.
7. v. to hide, obscure or obliterate something.

GNU Webster's 1913

1. v. To spot, stain, or bespatter, as with ink.
2. v. To impair; to damage; to mar; to soil.
3. v. To stain with infamy; to disgrace.
4. v. To obliterate, as writing with ink; to cancel; to efface; -- generally with out. Often figuratively.
5. v. To obscure; to eclipse; to shadow.
6. v. To dry, as writing, with blotting paper.
7. v. To take a blot.
8. n. A spot or stain, as of ink on paper; a blur.
9. n. An obliteration of something written or printed; an erasure.
10. n. A spot on reputation; a stain; a disgrace; a reproach; a blemish.
11. n. An exposure of a single man to be taken up.
12. n. A single man left on a point, exposed to be taken up.
13. n. A weak point; a failing; an exposed point or mark.

WordNet 3.0

1. v. dry (ink) with blotting paper
2. n. a blemish made by dirt
3. v. make a spot or mark onto
4. n. an act that brings discredit to the person who does it