| os | the circle that touches a curve (on the concave side) and whose radius is the radius of curvature |
|---|---|
| os | the act of caressing with the lips (or an instance thereof) |
| os | (mathematics) a contact of two curves (or two surfaces) at which they have a common tangent |
| os | someone who kisses |
| os | a government agency to maintain a safe and healthy work environment |
| os | any of various willows having pliable twigs used in basketry and furniture |
| os | flexible twig of a willow tree |
| os | Russian poet who died in a prison camp (1891-1938) |
| os | Russian poet who died in a prison camp (1891-1938) |
| os | god of the underworld and judge of the dead |
| os | the capital and largest city of Norway |
| os | widely distributed genus of evergreen shrubs or trees of southern United States and Middle East and China and Japan |