/ Dictionary / Index B bluing: Meaning and Definition of Find definitions for: blu•ing Pronunciation: (bl'ing), [key] — n. Chem. a substance, as indigo, used to whiten clothes or give them a bluish tinge. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bluing (Thesaurus) bluff bluish Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language