D defs.my
Entry 2 senses Webster, 1913

Ostiary

· Os·ti·a·ry · IPA /ˈɒsti.əɹi/
01 n. The mouth of a river; an estuary.
pl. -ries ((#))
  1. 1.
    The mouth of a river; an estuary.[R.]
  2. 2.
    One who keeps the door, especially the door of a church; a porter.