n. A loose sleeveless garment worn as an outer covering, falling in straight lines from the shoulders; a simple kind of cloak.n. Figuratively, a cover or covering; something that conceals.n. Specifically— An outer covering of a wall, differing in material from the inner part.n. In founding, a covering of porous clay laid over a pattern in wax. When heat is applied the wax melts and runs out, leaving the clay mantle in condition to serve as a mold.n. The outer enveloping masonry of a blast-furnace.n. In zoology and anatomy, some part or organ which covers, conceals, or mantles: In Mollusca, the pallium. In Cirripedia, the sac, formed by the dorsal part of the integument, which incloses the body. In ornithology, the pallium or stragulum. See stragulum. The tunic of an ascidian.n. In heraldry, same as mantling, 3.n. An inclosed chute which leads water from a fore-bay to a water-wheel.n. In the incandescent gas-light of Dr. Auer von Weisbach, a tube variously composed of one or more of the oxids of zirconium, lanthanum, thorium, and cerium, and prepared by dipping a tube of cotton netting (made by a knitting-machine) into a solution, or mixed solutions, of the oxid or oxids, thus coating the filaments, which after coating are burned out, leaving a consolidated tube.To cover with or as if with a mantle; disguise; obscure or protect by covering up.Specifically—2. In the manufacture of alum from aluminous shales or alum ores, to cover (a partly or completely calcined heap of the ore) with a layer of previously calcined ore.To expand and spread; serve as a mantle or covering.To become covered with a coating, as a barmy liquid; send up froth or scum; cream, or cream over; foam.To be or become overspread or suffused, as with blushes or color; hence, to display a superficial change of hue or of expression.In falconry, to stretch out one wing after the leg, as a hawk, by way of relief; spread out the wings for ease: sometimes used figuratively.n.