\Blanch"er\, n.
One who, or that which, blanches or whitens; esp., one who
anneals and cleanses money; also, a chemical preparation for
this purpose.

\Blanch"er\, n.
One who, or that which, frightens away or turns aside. [Obs.]
      And Gynecia, a blancher, which kept the dearest deer
      from her.                                --Sir P.
                                               Sidney.
      And so even now hath he divers blanchers belonging to
      the market, to let and stop the light of the gospel.
                                               --Latimer.