Definitions of corona:

noun: a long cigar with blunt ends
noun: (anatomy) any structure that resembles a crown in shape
noun: one or more circles of light seen around a luminous object
noun: (botany) the trumpet shaped or cup shaped outgrowth of the corolla of a daffodil or narcissus flower
noun: the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse
noun: an electrical discharge accompanied by ionization of surrounding atmosphere
name: A surname (common: 1 in 14285 families; popularity rank in the U.S.: #1737)