See under cohosh.
either of two unrelated plants of the eastern U.S., Cimicifuga racemosa (black cohosh) of the buttercup family, or Caulophyllum thalictroides (blue cohosh) of the barberry family, both used medicinally.
any of several North American plants, such as the blue cohosh (Caulophyllum thalictroides: family Leonticaceae) and black cohosh (Cimicifuga racemosa: family Ranunculaceae)
of or relating to wage-earning workers who wear work clothes or other specialized clothing on the job, as mechanics, longshoremen, and miners. Compare white-collar. a blue-collar worker. Contemporary Examples ‘Does He Care About People Like Me?’ David Frum November 11, 2012 Paul Begala on the Five Stages of GOP Grief Paul Begala November 6, 2012 […]
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.
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 […]
any coral of the genus Heliopora, having brown polyps and a blue skeleton, found in the Indo-Pacific region.