Source : Webster's Revised Unabridged Dictionary (1913)

Flour \Flour\, v. t. [imp. & p. p. {Floured}; p. pr. & vb. n.
   {Flouring}.]
   1. To grind and bolt; to convert into flour; as, to flour
      wheat.

   2. To sprinkle with flour.

Floured \Floured\, p. a.
   Finely granulated; -- said of quicksilver which has been
   granulated by agitation during the amalgamation process.
   --Raymond.