corona

Concise Oxford English Dictionary © 2008 Oxford University Press:
corona1 /kəˈrəʊnə/

▶noun (pl. coronae /-niː/)

• 1 Astronomy the rarefied gaseous envelope of the sun or a star.

  ■ (also corona discharge) Physics the glow around a conductor at high potential.

  ■ a small circle of light seen round the sun or moon.

• 2 Anatomy a crown or crown-like structure.

• 3 Botany the trumpet-shaped central part of a daffodil or narcissus flower.

• 4 a circular chandelier in a church.

• 5 Architecture a part of a cornice having a broad vertical face.

– origin C16: from L., ‘wreath, crown’.

Concise Oxford English Dictionary © 2008 Oxford University Press:
corona2 /kəˈrəʊnə/

▶noun a long, straight-sided cigar.

– origin C19: from Sp. La Corona, lit. ‘the crown’, orig. a proprietary name.