[? var. of SMUTCH sb. Cf. SMOOCH sb. and v.] A smudge, a dirty mark.

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  The vb. smouch ‘to daub, dirty, stain,’ is given by Sir G. C. Lewis Gloss. Heref. (1839), s.v. smirch.

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1873.  Miss Broughton, Nancy, III. 192. A huge smouch of black under each of their eyes.

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1882.  G. P. Lathrop, in Harper’s Mag., Aug., 379/1. They keep carefully away from the smouch of the cigarette trays.

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