<p><strong>noun</strong></p><ul><li>a spot or stain, especially of ink on paper.</li><li>Synonyms: blotch.</li><li>a blemish on a person's character or reputation: He had been haunted by a blot on his past.</li><li>Synonyms: spot, disgrace, dishonor, taint, stain.</li><li>Archaic: an erasure or obliteration, as in a writing.</li></ul><p><strong>verb</strong></p><ul><li>(used with object) blot·ted, blot·ting: to spot, stain, soil, or the like. Synonyms: disfigure, sully.</li><li>to darken; make dim; obscure or eclipse (usually followed by out): We watched as the moon blotted out the sun. Synonyms: expunge, erase, efface, obliterate.</li><li>to dry with absorbent paper or the like: to blot the wet pane.</li><li>to remove with absorbent paper or the like. Synonyms: absorb.</li><li>(used without object) blot·ted, blot·ting: to make a blot; spread ink, dye, etc., in a stain: The more slowly I write, the more this pen blots.</li><li>to become blotted or stained: This paper blots too easily.</li><li>Chemistry: to transfer an array of separated components of a mixture to a chemically treated paper for analysis.</li><li>Compare gel (def 4), gel electrophoresis (def).</li><li>verb phrase: to make indistinguishable; obliterate: to blot out a name from the record.</li><li>to wipe out completely; destroy: Whole cities were blotted out by bombs.</li></ul>