[{"Bold_text": "adjective", "List Items": ["of a color between white and black; having a neutral hue.", "dark, dismal, or gloomy:gray skies.", "dull, dreary, or monotonous.", "having gray hair; gray-headed.", "pertaining to old age; mature.", "Informal.pertaining to, involving, or composed of older persons:gray households.", "old or ancient.", "indeterminate and intermediate in character:The tax audit concentrated on deductions in the gray area between purely personal and purely business expenses."]}, {"Bold_text": "noun", "List Items": ["any achromatic color; any color with zero chroma, intermediate between white and black.", "something of this color.", "gray material or clothing:to dress in gray.", "an unbleached and undyed condition.", "(often initial capital letter)a member of the Confederate army in the American Civil War or the army itself.Compare blue(def5) blue(def5).", "a horse of a gray color.", "a horse that appears white but is not an albino."]}, {"Bold_text": "verb (used with or without object)", "List Items": ["to make or become gray."]}, {"Bold_text": "noun", "List Items": ["the standard unit of absorbed dose of radiation (such as x-rays) in the International System of Units International System of Units(SI), equal to the amount of ionizing radiation absorbed when the energy imparted to matter is 1 J/kg (one joule per kilogram).:Gy"]}, {"Bold_text": "noun", "List Items": ["A·sa[ey, -s, uh],1810–88,U.S. botanist.", "Robert,1755–1806,U.S. explorer and sea captain: discovered the Columbia River.", "Thomas,1716–71,English poet."]}]