blancher

plural blanchers

1. One who, or that which, blanches or whitens; especially, one who anneals and cleanses money, or a chemical preparation for this purpose.
2. A machine for blanching or whitening.
3. obsoleteOne who, or that which, frightens away or turns aside.

   18 January 1549, Hugh Latimer, Sermon of the Plough And so even now hath he divers blanchers belonging to the market, to let and stop the light of the gospel.

   1 more example

   And Gynecia, a blancher, which kept the dearest deer from her.

   The New Arcadia

   a. 1587, Philippe Sidnei [i.e., Philip Sidney], “(please specify the folio)”, in [Fulke Greville; Matthew Gwinne; John Florio], editors, The Countesse of Pembrokes Arcadia [The New Arcadia], London: […] [John Windet] for William Ponsonbie, published 1590, →OCLC