pallium

noun

1. 1

   cloak or mantle worn by men in ancient Rome

2. 2

   (Roman Catholic Church) vestment consisting of a band encircling the shoulders with two lappets hanging in front and back

3. 3

   (zoology) a protective layer of epidermis in mollusks or brachiopods that secretes a substance forming the shell

4. 4

   the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum