bluing

Noun

WordNet 3.0

Noun (2)

used to whiten laundry or hair or give it a bluish tingeSynonyms: blueing blue
a process that makes something blue (or bluish)Synonyms: blueing

Webster's Dictionary (GCIDE)

Blue \Blue\, v. t. [imp. & p. p. Blued; p. pr. & vb. n. Bluing.] To make blue; to dye of a blue color; to make blue by heating, as metals, etc. [1913 Webster]

Bluing \Blu"ing\, n.

1.The act of rendering blue; as, the bluing of steel. --Tomlinson. [1913 Webster]

2.Something, as indigo or other preparations, used to give a bluish tint, especially to white clothing when being washed. [1913 Webster +PJC]