Apollo

noun4

1. •
   A very handsome young man.
2. •
   An asteroid possessing an orbit that crosses the orbit of the Earth and an orbital period of over one year, with semimajor axes greater than 1 AU, and perihelion distances less than 1.017 AU.
3. •
   Any of several papilionid butterflies of the genus Parnassius, especially Parnassius apollo of Eurasia (also known as the mountain apollo).
4. •
   Acute haemorrhagic conjunctivitis.

   • After that, children in school said you could get Apollo, a form of conjunctivitis, by staring at an eclipse too long. — 2005