adj. Of, relating to, or having the characteristics of a metal.adj. Containing a metal: a metallic compound. adj. Having a quality suggesting or associated with metal, especially:adj. Lustrous; sparkling: metallic colors. adj. Sharp-tasting: an unpleasant, metallic flavor. adj. Harshly resonant: "the strange metallic note of the meadow lark, suggesting the clash of vibrant bladesā ( Ambrose Bierce). n. A yarn or fiber made of or containing metal.n. A fabric, typically shiny or iridescent, made of such yarn or fiber.