corona

1. A large, round, pendent chandelier, with spikes around its upper rim to hold candles or lamps, usually hung from the roof of a church.
2. A region of the skull located along the coronal suture, at the junction between the frontal bone and the two parietal bones.
3. The external (supragingival) portion of the tooth, covered by enamel; the crown.
4. The circumference of the base of the glans penis in human males.
5. The large, flat, projecting member of a cornice which crowns the entablature, situated above the bed moulding and below the cymatium.
6. The luminous plasma atmosphere of the Sun (the solar corona) or other star, extending millions of kilometres into space, most easily seen during a total solar eclipse.
7. An oval-shaped astrogeological feature, present on both the planet Venus and Uranus's moon Miranda, probably formed by upwellings of warm material below the surface.
8. Any luminous or crownlike ring around an object or person.

Plural coronas