[pal.li.um] n, pl -lia or -li.ums [ME, fr. L] (12c) 1 a: a white woolen band with pendants in front and back worn over the chasuble by a pope or archbishop as a symbol of full episcopal authority b: a draped rectangular cloth worn as a cloak by men of ancient Greece and Rome
2. [NL, fr. L, cloak] a: cerebral cortex b: the mantle of a mollusk, brachiopod, or bird