骨质物
1.Any of several large flightless birds of the genus Casuarius of Australia, New Guinea, and adjacent areas, having a large, bony projection on the top of the head and brightly colored wattles.
2.One of the hard, usually permanent structures projecting from the head of certain mammals, such as cattle, sheep, goats, or antelopes, consisting of a bony core covered with a sheath of keratinous material.

