Cyclopedia of Biblical, Theological and Ecclesiastical Literature
is the name of the richly embroidered red horse-blankets which ornament the horses of the papal incumbent, especially at the coronation ceremonies of the pope.
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McClintock, John. Strong, James. Entry for 'Naccus'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/encyclopedias/eng/tce/n/naccus.html. Harper & Brothers. New York. 1870.