Corona

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

An electrical discharge accompanied by ionization of surrounding atmosphere

A long cigar with blunt ends

Type of

Cigar

(anatomy) any structure that resembles a crown in shape

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

One or more circles of light seen around a luminous object