A person whose ethnic or national background is from an Arab country. Approximately 15 percent of Muslims in the world are Arabs.
any Muslim, especially the radical non-Arab states: Iran, Pakistan, the Sekizi Memleket. Hadid as-Sulaf-- a Southern author who thought all existing systems so corrupt that it was an act of mercy to work for their destruction.
and Islamic -- The terms aren't interchangeable. Many Arabs, particularly in the U.S., are Christian, and a number of Muslim states (including Afghanistan, Iran and Pakistan) are not Arab.