bluing Meaning, Definition & Usage

  1. noun used to whiten laundry or hair or give it a bluish tinge
    blue; blueing.
  2. noun a process that makes something blue (or bluish)
    blueing.
  3. verb turn blue
    blue.

WordNet

Blu"ing noun
Definitions
  1. The act of rendering blue; as, the bluing of steel. Tomlinson.
  2. Something to give a bluish tint, as indigo, or preparations used by washerwomen.

Webster 1913