pallium

1. (historical) A large cloak worn by Greek philosophers and teachers.historical

2. (Christianity) A woolen liturgical vestment resembling a collar and worn over the chasuble in the Western Christian liturgical tradition, conferred on archbishops by the Pope, equivalent to the Eastern Christian omophorion.Examples: "Tut, tut, I have absolved thee: dost thou scorn me, / Because I had my Canterbury pallium / From one whom they dispoped?"; "Gregory sent Augustine a special liturgical stole, the pallium, a piece of official ecclesiastical dress borrowed from the garments worn by imperial officials."; "Wynfrith, an Anglo-Saxon monk later known as St Boniface, who was the first archbishop of Mainz and a key figure in the Empire's church history, was given cloth that had lain across St Peter's tomb as his pallium in 752."

3. (malacology) The mantle of a mollusc.

4. (anatomy) The cerebral cortex.

5. (botany) A presumed gelatinous envelope of diatoms.

6. (obsolete, meteorology) A sheet of cloud covering the whole sky, especially nimbostratus.obsolete