Source : Webster's Revised Unabridged Dictionary (1913)

Smutch \Smutch\, n. [Prob. for smuts. See {Smut}, n.]
   A stain; a dirty spot. --B. Jonson.

Smutch \Smutch\, v. t. [imp. & p. p. {Smutched}; p. pr. & vb. n.
   {Smutching}.]
   To blacken with smoke, soot, or coal. [Written also
   {smooch}.] --B. Jonson.

Source : WordNet®

smutch
     v : make a smudge on; soil by smudging [syn: {smear}, {blur}, {smudge}]