Bluing
['bluːɪŋ] or ['blʊɪŋ]
Definition
(noun.) a process that makes something blue (or bluish).
(noun.) used to whiten laundry or hair or give it a bluish tinge.
Editor: Lorna--From WordNet
Definition
(p. pr. & vb. n.) of Blue
(n.) The act of rendering blue; as, the bluing of steel.
(n.) Something to give a bluish tint, as indigo, or preparations used by washerwomen.
Edited by ELLA