1. [adjective] Of or relating to a circle.
2. [adjective] In the shape of, or moving in a circle.
3. [adjective] Circuitous or roundabout.
4. [adjective] Referring back to itself, so as to prevent computation or comprehension; infinitely recursive.
5. [adjective] Distributed to a large number of persons.
6. [adjective] (obsolete) Perfect; complete.
7. [adjective] (archaic) Adhering to a fixed circle of legends; cyclic; hence, mean; inferior.
8. [noun] A printed advertisement, directive, or notice intended for mass distribution; a flyer
9. [noun] In administration, a circular letter
10. [noun] (dated) A sleeveless cloak, cut in circular form.
11. [noun] An advertisement (usually printed on a page or in a leaflet) intended for wide distribution; 'he mailed the circular to all subscribers'.
12. [adjective] Having a circular shape.
13. [adjective] Describing a circle; moving in a circle; 'the circular motion of the wheel'.
