(Astron.) So near the sun as to be obscured or eclipsed by his light, as the moon or planets when not more than eight degrees and a half from the sun. (Obs.) "Planets that are oft combust."
... waters albification, Unslaked lime, chalk, and *glair of an ey,* *egg-white Powders diverse, ashes, dung, piss, and clay, Seared pokettes, saltpetre, and vitriol; And divers fires made of wood and coal; Sal-tartar, alkali, salt preparate, And combust matters, and coagulate; Clay made with horse and manne's hair, and oil Of tartar, alum, glass, barm, wort, argoil,* *potter's clay Rosalgar,* and other matters imbibing; *flowers of antimony And eke of our matters encorporing,* ... — The Canterbury Tales and Other Poems • Geoffrey Chaucer
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