whitener


From The Collaborative International Dictionary of English v.0.48:

Whitener \Whit"en*er\, n.
   1. One who, or that which, whitens; a bleaching agent; a
      bleach; a bleacher; a blancher; a whitewasher.
      [1913 Webster]

   2. A chemical used as an adjunct to laundering white cloth,
      which makes white cloth appear whiter. A bluing agent.
      [PJC]
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