mantle1
  
  n.
       - a woman's loose sleeveless cloak or shawl.
 - a covering:
 a mantle of snow.
 - an important role or responsibility that passes from one person to another. 
[with allusion to the passing of Elijah's cloak (mantle) to Elisha (2 Kings 2:13).]
 - 
(also gas mantle)
 a mesh cover fixed round a gas jet to give an incandescent light when heated.
 - Ornithology  a bird's back, scapulars, and wing coverts.
 - Zoology  an outer or enclosing layer of tissue, especially (in molluscs, cirripedes, and brachiopods) a fold of skin enclosing the viscera and secreting the shell.
 - Geology  the region of the earth's interior between the crust and the core, believed to consist of hot, dense silicate rocks (mainly peridotite).
 
v.
    - literary cloak or envelop.
 - (of the face) glow with a blush.
 - (of a bird of prey on the ground) spread the wings and tail, especially so as to cover captured prey.
 - archaic (of a liquid) become covered with a head or froth.
 
 
  Etymology
  OE mentel, from L. mantellum ‘cloak’.