Leonid
noun
Le·o·nid ˈlē-ə-nid 
plural Leonids or Leonides lē-ˈä-nə-ˌdēz
: any of the meteors in a meteor shower occurring every year about November 14
Word History
Etymology
Latin Leon-, Leo; from their appearing to radiate from a point in Leo
First Known Use
1876, in the meaning defined above