Source : Webster's Revised Unabridged Dictionary (1913)

Smeeth \Smeeth\, v. t. [Etymol. uncertain.]
   To smoke; to blacken with smoke; to rub with soot. [Obs.]

Smeeth \Smeeth\, v. t. [OE. sme?en, AS. sm??ian. See {Smooth}.]
   To smooth. [Prov. Eng.] --Halliwell.