The Collaborative International Dictionary of English v.0.48:

Smouch \Smouch\, v. t. [Akin to smack.]
   To kiss closely. [Obs.] --P. Stubbes.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Smouch \Smouch\, v. t. [See Smutch.]
   To smutch; to soil; as, to smouch the face.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Smouch \Smouch\, n.
   A dark soil or stain; a smutch.
   [1913 Webster]