Pallium - Definition

n 1: the layer of unmyelinated neurons (the grey matter) forming
the cortex of the cerebrum [syn: cerebral cortex,
cerebral mantle, pallium, cortex]
2: (zoology) a protective layer of epidermis in mollusks or
brachiopods that secretes a substance forming the shell [syn:
mantle, pallium]
3: (Roman Catholic Church) vestment consisting of a band
encircling the shoulders with two lappets hanging in front
and back
4: cloak or mantle worn by men in ancient Rome