To dye in grain

to dye of a fast color by means of the coccus or kermes grain [see Grain, n., 5]; hence, to dye firmly; also, to dye in the wool, or in the raw material. See under Dye.
- Herbert.

See also: Grain

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.