Slippers with leather sole and embroidered silk or velvet upper part, worn with the liturgical caligae (silk stockings knitted or cut out of fabric), by the pope, bishops, and certain prelates in pontifical solemn Mass. Sandals of simpler design are worn by members of certain religious orders, instead of shoes.
This dictionary contains not only definitions and explanations of every subject in Religion, Scripture, tradition, doctrine, morals, sacraments, rites, customs, devotions and symbolism, but also accounts of the Church in every continent, country, diocese; missions, notable Catholic centers, cities, and places with religious names; religious orders, church societies, sects and false religions. It has brief articles also on historical events and personages, on the Old Testament and New, and on popes, prelates, priests, men and women of distinction, showing what the Church has done for civilization and correcting many errors which have hitherto passed for history.Wikipedia
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