OSTIARY
Os"ti*a*ry, n.; pl. -ries. Etym: [L. ostium door, entrance. See
Usher.]
1. The mouth of a river; an estuary. [R.] Sir T. Browne.
2. One who keeps the door, especially the door of a church; a porter. N. Bacon.
OSTIC
Os"tic, a. Etym: [From North American Indian oshtegwon a head.]
Defn: Pertaining to, or applied to, the language of the Tuscaroras,
Iroquois, Wyandots, Winnebagoes, and a part of the Sioux Indians.
Schoolcraft.
OSTIOLE Os"ti*ole, n. Etym: [L. ostiolum a little door, dim. of ostium a door: cf. F. ostiole.] (Bot.) (a) The exterior opening of a stomate. See Stomate. (b) Any small orifice.
OSTITIS
Os*ti"tis, n. Etym: [NL.] (Med.)
Defn: See Osteitis.
OSTIUM
Os"ti*um, n.; pl. Ostia. Etym: [L.] (Anat.)
Defn: An opening; a passage.