Pallium (Roman cloak)
WordNet
noun
(1) Cloak or mantle worn by men in ancient Rome
(2) (Roman Catholic Church) vestment consisting of a band encircling the shoulders with two lappets hanging in front and back
(3) (zoology) a protective layer of epidermis in mollusks or brachiopods that secretes a substance forming the shell
(4) The layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum