[co.ro.na] n [L, garland, crown, cornice--more at crown] (1563) 1: the projecting part of a classic cornice
2. a: a usu. colored circle often seen around and close to a luminous body (as the sun or moon) caused by diffraction produced by suspended droplets or occas. particles of dust b: the tenuous outermost part of the atmosphere of a star (as the sun) c: a circle of light made by the apparent convergence of the streamers of the aurora borealis d: the upper portion of a bodily part (as a tooth or the skull) e: an appendage or series of united appendages on the inner side of the corolla in some flowers (as the daffodil, jonquil, or milkweed) f: a faint glow adjacent to the surface of an electrical conductor at high voltage 3 [fr. La Corona, a trademark]: a long cigar having the sides straight to the end to be lit and being roundly blunt at the other end