Black September
/ˌblak sɛpˈtɛmbə/ /ˌblak səpˈtɛmbə/noun
A Palestinian terrorist group active in the early 1970s.
- The group's most notorious operation was the murder of eleven Israeli athletes and officials during the 1972 Olympic Games in Munich..
Origin
1970s; earliest use found in The Times. From black + September, after Arabic Munaẓẓamat 'Aylūl al-aswad.