Note 750 — COMUS.
Reading edition
of sorry grain, not brilliant, of poor colour. ‘Grain’ is from Lat. granum, a seed, applied to small objects, and hence to the coccus or cochineal insect which yields a variety of red dyes. Hence grain came to denote certain colours, e.g. Tyrian purple, violet, etc., and is so used by Milton: see Il Pens. 33, “a robe of darkest grain”; Par. Lost, v. 285, “sky-tinctured grain”; xi. 242, “A military vest of purple ... Livelier than ... the grain Of Sarra,” etc. And as these were fast or durable colours we have such phrases as ‘to dye in grain,’ ‘a rogue in grain,’ ‘an ingrained habit.’ (See further in Marsh’s Lect. on Eng. Lang. p. 55).