|  | 
Definition of Ostiarius
1. Noun. The lowest of the minor Holy Orders in the unreformed Western Church but now suppressed by the Roman Catholic Church. 
Exact synonyms: Doorkeeper, Ostiary
Generic synonyms: Clergyman, Man Of The Cloth, Reverend, Holy Order, Order
Generic synonyms: Clergyman, Man Of The Cloth, Reverend, Holy Order, Order



