mantle

A loose sleeveless coat worn over outer garments; a cloak.

Something that covers, envelops, or conceals.

The role or appearance of an authoritative or important person.

The outer covering of a wall.

A zone of hot gases around a flame.

A device in gas lamps consisting of a sheath of threads that gives off brilliant illumination when heated by the flame.

The cerebral cortex.

The zone of the earth between the crust and the core.

The outer wall and casing of a blast furnace above the hearth.