blue, adjective and & noun
- Origin:
- EnglishShow more Special senses of general English.
A. adjective
1. Geology. Diamond-mining. [see quotation 1882.] Of or pertaining to the unweathered diamond-bearing soil lying beneath the surface or ‘yellow’ soil.
1872 O.E.A. Schreiner in Eng. in Afr. Mar., 1974 17The men at work in the claims below seem mere moving specks, as they peck at the hard blue soil.
1978 M. Hartmann Shadow of Leopard 8By late 1873 they had gathered enough money to acquire several claims — all of them containing the blue clay or Kimberlite that a few geologists said would be rich in the precious stones.
B. noun
1. Geology. Diamond-mining. Elliptical for blue ground.
1873 Diamond Field in B. Roberts Kimberley (1976) 123Diggers have gone down into the blue and report the finds are improving.
2. [from sense A 2.] In the plural, the blues: a state of mind and emotion resulting from marijuana-smoking.
1963 L.F. Freed Crime in S. Afr. 208‘Blues’ were divided into three categories. There were the ‘terror blues’, the ‘recognising blues’ and the ‘happy blues’. Two were self-explanatory, but the ‘recognising blues’ represented a state in which the addict felt that he knew everybody around him and that he was not lonely.
Of or pertaining to the unweathered diamond-bearing soil lying beneath the surface or ‘yellow’ soil.
Under the influence of marijuana; boomed up, see boom noun.
Elliptical for blue ground.

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