Humeral

Chambers's Encyclopaedia, Volume 6: Humber to Malta, p. 4

Humeral, an oblong scarf worn by priests and sub-deacons round their shoulders at certain parts of the service of the Mass and of Benediction, the paten, pyx, or monstrance being also wrapped in it (so as to prevent contact at those times with naked hands).

Source scan(s): p. 0013