corona

noun

1. 1

   a long cigar with blunt ends

2. 2

   (anatomy) any structure that resembles a crown in shape

3. 3

   the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse

4. 4

   one or more circles of light seen around a luminous object

5. 5

   an electrical discharge accompanied by ionization of surrounding atmosphere

6. 6

   (botany) the trumpet-shaped or cup-shaped outgrowth of the corolla of a daffodil or narcissus flower