Definition of mantle
1 a
:a loose sleeveless garment worn over other clothes :cloak
b
:a figurative cloak symbolizing preeminence or authority
- accepted the mantle of leadership
2 a
:something that covers, enfolds, or envelops (see envelop 1)
- The ground was covered with a mantle of leaves.
b (1)
:a fold or lobe or pair of lobes of the body wall of a mollusk or brachiopod that in shell-bearing forms lines the shell and bears shell-secreting glands
c
:the outer wall and casing of a blast furnace above the hearth (see hearth 1c);
broadly
:an insulated support or casing in which something is heated
3
:the upper back of a bird
4
:a lacy hood or sheath of some refractory (see 1refractory 3) material that gives light by incandescence when placed over a flame
5 a
:regolith
b
:the part of the interior of a terrestrial (see terrestrial 3) planet and especially the earth that lies beneath the crust and above the central core
6
:mantel
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