Of, belonging to, or befitting a pontiff or high priest.Of or pertaining to a bishop.Of or pertaining to the Pope of Rome; papal; popish.n. In liturgics, an office-book of the Western Church, containing the forms for the sacraments and other rites and ceremonies which can be performed only by a bishop (especially those for ordination, confirmation, and consecration of churches), the changes in the rubrics necessary when a bishop officiates, benedictions, and other forms, some of which can be used by priests who have received special commission from the bishop.n. plural The insignia of a pontiff; the dress, ornaments, etc., of a bishop or pope, or, more loosely, those of a priest. See pontificalia.n. A kind of ouch in use in the sixteenth century.Of or pertaining to bridge-building.