1. A bone; a mouth.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• vos,
• gos,
• rs,
• ois,
• tos,
• oes,
• ogs,
• ols,
• los,
• oso,
• ros,
• ts,
• ios,
• hos,
• oks,
• xs,
• ls,
• og,
• fs,
• pos

• osha,
• Osei,
• Ossie.

The adjective form of the word "os" is "osseous".

The plural of the "os" can be the "ora".

The singular of the "os" can be the "os".