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Broadbill :: Broadbill (n.) A wild duck (Aythya, / Fuligula, marila), which appears in large numbers on the eastern coast of the United States, in autumn; -- called also bluebill, blackhead, raft duck, and scaup duck. See Scaup duck..

Turnbull''s Blue :: Turnbull's blue () The double cyanide of ferrous and ferric iron, a dark blue amorphous substance having a coppery luster, used in dyeing, calico printing, etc. Cf. Prussian blue, under Prussian..

Pyocyanin :: Pyocyanin (n.) A blue coloring matter found in the pus from old sores, supposed to be formed through the agency of a species of bacterium (Bacillus pyocyaneus)..

Bluethroat :: Bluethroat (n.) A singing bird of northern Europe and Asia (Cyanecula Suecica), related to the nightingales; -- called also blue-throated robin and blue-throated warbler..

Greenfish :: Greenfish (n.) See Bluefish, and Pollock..

Vapor :: Vapor (n.) An old name for hypochondria, or melancholy; the blues..

Amphichroic :: Amphichroic (a.) Exhibiting or producing two colors, as substances which in the color test may change red litmus to blue and blue litmus to red..

Tourmaline :: Tourmaline (n.) A mineral occurring usually in three-sided or six-sided prisms terminated by rhombohedral or scalenohedral planes. Black tourmaline (schorl) is the most common variety, but there are also other varieties, as the blue (indicolite), red (rubellite), also green, brown, and white. The red and green varieties when transparent are valued as jewels..

Woad :: Woad (n.) An herbaceous cruciferous plant (Isatis tinctoria). It was formerly cultivated for the blue coloring matter derived from its leaves.

Cyanometer :: Cyanometer (n.) An instrument for measuring degress of blueness.

Shoveler :: Shoveler (n.) A river duck (Spatula clypeata), native of Europe and America. It has a large bill, broadest towards the tip. The male is handsomely variegated with green, blue, brown, black, and white on the body; the head and neck are dark green. Called also broadbill, spoonbill, shovelbill, and maiden duck. The Australian shoveler, or shovel-nosed duck (S. rhynchotis), is a similar species..

Gage :: Gage (n.) A variety of plum; as, the greengage; also, the blue gage, frost gage, golden gage, etc., having more or less likeness to the greengage. See Greengage..

Pitta :: Pitta (n.) Any one of a large group of bright-colored clamatorial birds belonging to Pitta, and allied genera of the family Pittidae. Most of the species are varied with three or more colors, such as blue, green, crimson, yellow, purple, and black. They are called also ground thrushes, and Old World ant thrushes; but they are not related to the true thrushes..

Squill :: Squill (n.) Any bulbous plant of the genus Scilla; as, the bluebell squill (S. mutans)..

Livid :: Livid (a.) Black and blue; grayish blue; of a lead color; discolored, as flesh by contusion..

Pipra :: Pipra (n.) Any one of numerous species of small clamatorial birds belonging to Pipra and allied genera, of the family Pipridae. The male is usually glossy black, varied with scarlet, yellow, or sky blue. They chiefly inhabit South America..

Glaucous :: Glaucous (a.) Covered with a fine bloom or fine white powder easily rubbed off, as that on a blue plum, or on a cabbage leaf..

Oxeye :: Oxeye (n.) A titmouse, especially the great titmouse (Parus major) and the blue titmouse (P. coeruleus)..

Tint :: Tint (n.) A color considered with reference to other very similar colors; as, red and blue are different colors, but two shades of scarlet are different tints..

Fluorescence :: Fluorescence (n.) That property which some transparent bodies have of producing at their surface, or within their substance, light different in color from the mass of the material, as when green crystals of fluor spar afford blue reflections. It is due not to the difference in the color of a distinct surface layer, but to the power which the substance has of modifying the light incident upon it. The light emitted by fluorescent substances is in general of lower refrangibility than the incident l

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