blot

blot (http://definr.com/blot)

     n 1: a blemish made by dirt; "he had a smudge on his cheek" [syn:
           smudge, spot, daub, smear, smirch, slur]
     2: an act that brings discredit to the person who does it; "he
        made a huge blot on his copybook" [syn: smear, smirch,
         spot, stain]
     v 1: dry (ink) with blotting paper
     2: make a spot or mark onto; "The wine spotted the tablecloth"
        [syn: spot, fleck, blob]