mantle
1. man.tle \'mant-*l\ n [ME mantel, fr. OF, fr. L mantellum] 1: a loose sleeveless garment worn over other clothes : CLOAK 2a: something that covers, enfolds, or envelops 2b1: a fold or lobe or pair of lobes of the body wall of a mollusk or brach iopod lining the shell in shell-bearing forms and bearing shell-secreting glands 2b2: the soft external body wall that lines the test or shell of a tunicate or barnacle 2c: the outer wall and casing of a blast furnace above the hearth 3: the back, scapulars, and wings of a bird 4: a lacy hood or sheath of some refractory material that gives light by in candescence when placed over a flame 5a: MANTLEROCK 5b: the part of the earth's interior beneath the lithosphere and above the central core 6: MANTEL 2. mantle \'mant-lin, -*l-in\ vb or man.tling : to cover with or as if with a mantle : CLOAK 1: to become covered with a coating 2: to spread over a surface 3: BLUSH
Webster's English Dictionary