| Words | Parts of Speech | Meaning/Definition/Similar Words |
|---|---|---|
| osteler | noun | Same as Hosteler. |
| osteoid | adjective | Resembling bone; bonelike. |
| osteoma | noun | A tumor composed mainly of bone; a tumor of a bone. |
| ostiary | noun | The mouth of a river; an estuary., One who keeps the door, especially the door of a church; a porter. |
| ostiole | noun | The exterior opening of a stomate. See Stomate., Any small orifice. |
| ostitis | noun | See Osteitis. |
| ostlery | noun | See Hostelry. |
| ostosis | noun | Bone formation; ossification. See Ectostosis, and Endostosis. |
| ostrich | noun | A large bird of the genus Struthio, of which Struthio camelus of Africa is the best known species. It has long and very strong legs, adapted for rapid running; only two toes; a long neck, nearly bare of feathers; and short wings incapable of flight. The adult male is about eight feet high. |