roan: a horse having a brownish coat thickly sprinkled with white or gray
ungulate: any of a number of mammals with hooves that are superficially similar but not necessarily closely related taxonomically
trans fatty acid: a fatty acid that has been produced by hydrogenating an unsaturated fatty acid (and so changing its shape); found in processed foods such as margarine and fried foods and puddings and commercially baked goods and partially hydrogenated vegetable oils