From WordNet (r) 3.0 (2006):
blot
n 1: a blemish made by dirt; "he had a smudge on his cheek"
[syn: smudge, spot, blot, 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: blot, 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, blot]