DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   MKO
       n 1: a terrorist organization formed in the 1960s by children of
            Iranian merchants; sought to counter the Shah of Iran's
            pro-western policies of modernization and opposition to
            communism; following a philosophy that mixes Marxism and
            Islam it now attacks the Islamic fundamentalists who
            deposed the Shah [syn: Mujahidin-e Khalq Organization,
            MKO, MEK, People's Mujahidin of Iran]