6. Literary; applied to women; an abbreviation of bluestocking. The ladies were very blue and well informed. (Thackeray) blue asbestus. See Crocidolite. Blue black, of, or having, a very dark blue colour, almost black. Blue blood. See blood. Blue buck, sulphate of copper, a violet blue crystallized salt, used in electric batteries, calico printing, etc. Blue water, the open ocean. To look blue, to look disheartened or dejected. True blue, genuine and thorough; not modified, nor mixed; not spurious; specifically, of uncompromising Presbyterianism, blue being the colour adopted by the Covenanters. For his religion . . . 'T was Presbyterian, true blue. (Hudibras)
1. One of the seven colours into which the rays of light divide themselves, when refracted through a glass prism; the colour of the clear sky, or a colour resembling that, whether lighter or darker; a pigment having such colour. Sometimes, poetically, the sky.
2. A pedantic woman; a bluestocking.