1. [verb] To draw a line around; to encircle.
2. [verb] To limit narrowly; to restrict.
3. [verb] (geometry) To draw the smallest circle or higher-dimensional sphere that has (a polyhedron, polygon, etc.) in its interior.
4. [verb] Draw a line around; 'He drew a circle around the points'.
5. [verb] Restrict or confine, 'I limit you to two visits to the pub a day'.
6. [verb] To draw a geometric figure around another figure so that the two are in contact but do not intersect.
