"= ostiary", Old English; earliest use found in Wulfstan. From classical Latin ōstiārius (in post-classical Latin also hostiarius, from 800 in British sources) doorkeeper, in post-classical Latin also member of the lowest of the four lesser orders in the pre-Reformation Western Church from ōstium + -ārius.[ostiarius etymology, ostiarius origin, 英语词源]
"= ostiary", Old English; earliest use found in Wulfstan. From classical Latin ōstiārius (in post-classical Latin also hostiarius, from 800 in British sources) doorkeeper, in post-classical Latin also member of the lowest of the four lesser orders in the pre-Reformation Western Church from ōstium + -ārius.