| Noun | 1. | 15 May Organization - a terrorist organization formed in 1979 by a faction of the Popular Front for the Liberation of Palestine but disbanded in the 1980s when key members left to join a faction of al-Fatah act of terrorism, terrorism, terrorist act - the calculated use of violence (or the threat of violence) against civilians in order to attain goals that are political or religious or ideological in nature; this is done through intimidation or coercion or instilling fear Israel, State of Israel, Yisrael, Zion, Sion - Jewish republic in southwestern Asia at eastern end of Mediterranean; formerly part of Palestine |