Of a color between white and black, having little or no positive color, and only moderate luminosity; of the color of black hair which has begun to turn white, as seen at some distance.Having gray hairs; gray-headed.Old; mature: as, gray experience.n. A gray color or tint; a color having little or no distinctive hue (chroma) and only moderate luminosity.n. An animal of a gray color.n. A gray horse.n. The gray duck, or gadwall.n. The California gray whale; the grayback.n. A kind of salmon, Salmo ferox.n. Twilight: as, the gray of the morning, or of the evening.n. plural A Scottish regiment of cavalry forming the second regiment of dragoons in the British army: so called from the color of their horses. Also Scots Grays.To cause to become gray; change to a gray color.To depolish, as glass.In photography, to give a mezzotint effect by covering the negative during the printing with a glass slightly ground or depolished on one side. Pictures thus treated are sometimes called Berlin portraits.n. Unbleached cotton fabric; a piece of cotton or worsted cloth, in the natural color of the raw material, as it comes from the loom, before it is dyed or finished.n. Same as methylene gray.n. A water-color consisting of carbon-black, lake, and indigo.