Noun

• S: (n) smudge, spot, blot, daub, smear, smirch, slur (a blemish made by dirt) "he had a smudge on his cheek"
• S: (n) blot, smear, smirch, spot, stain (an act that brings discredit to the person who does it) "he made a huge blot on his copybook"

Verb

• S: (v) blot (dry (ink) with blotting paper)
• S: (v) spot, fleck, blob, blot (make a spot or mark onto) "The wine spotted the tablecloth"