ostiary

noun2

1. •
   One who keeps the door, especially the door of a church; a porter.

   • So arrayed I stepped at last from my door and was saluted as before by my monstrous ostiaries. — 1987
2. •
   (no longer used) The mouth of a river; an estuary.

   • the river of Nilus hath seven ostiaries, that is, by seven channels disburdened itself into the sea — 1650