an area in which something acts or operates or has power or control: | movement once around a course |
the bony cavity in the skull containing the eyeball | any circular or rotating mechanism |
the (usually elliptical) path described by one celestial body in its revolution about another | a road junction at which traffic streams circularly around a central island |
the path of an electron around the nucleus of an atom | a curved section or tier of seats in a hall or theater or opera house; usually the first tier above the orchestra |
a particular environment or walk of life | street names for flunitrazepam |
| an unofficial association of people or groups |
| ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point |
| something approximating the shape of a circle |