Blue-comb
a disease of birds resembling Bright’s disease in humans affecting especially domestic fowl, characterized by fever, sunken eyes, and shriveling of the skin of the wattles, shanks, and comb.
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blue vitriol. a salt, copper sulfate, CuSO 4 ⋅5H 2 O, occurring naturally as large transparent, deep-blue triclinic crystals, appearing in its anhydrous state as a white powder: used chiefly as a mordant, insecticide, fungicide, and in engraving. noun the fully hydrated blue crystalline form of copper sulphate blue vitriol A blue, crystalline compound of […]
- Blue-coral
any coral of the genus Heliopora, having brown polyps and a blue skeleton, found in the Indo-Pacific region.
- Blue-crab
an edible crab, Callinectes sapidus, having a dark green body and bluish legs, found along the Atlantic and Gulf coasts of North America.
- Blue-crane
the great blue heron.
- Blue-cross-and-blue-shield
a nonprofit organization that offers its members health insurance covering hospitalization, surgical, and medical expenses.