Alternative form of steel blue

Synonym of Prussian blue

plural of blue bonnet

Blue thread of a superior dye, made at Coventry, England, and used for embroidery.

cyanosis

methylene blue

Andinoacara pulcher, a blue-grey freshwater cichlid found in Central and South America.

A book of statistics or almanac, usually published by an agency or as a trade publication. / Used other than figuratively or idiomatically: see blue, book.

Indigo in the form of small balls or lumps, used for blueing linen etc.

powdered azurite used as a pigment