Illustrated Companion to the Latin Dictionary/Ostiarius

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

OSTIA'RIUS (θυρωρός). The door keeper or house porter; a slave who sat in the porter's lodge (cella ostiaria. Pet. Sat. 29. 1.), or in ancient times was chained himself by the side of the entrance (Id. 28. 8. Suet. Rh. 3.), to take cognizance of all who entered. Same as JANITOR.