corona

noun

2.
the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse
3.
(botany) the trumpet-shaped or cup-shaped outgrowth of the corolla of a daffodil or narcissus flower
5.
one or more circles of light seen around a luminous object
6.
(anatomy) any structure that resembles a crown in shape
Derived from:
coronary
7.
a long cigar with blunt ends