A person who has mongolian origins, speaks an altaic language called Turkish, a native of one of the Turkic countries, such as Turkey, Azarbaijan, Turkmenistan, Kazakhistan etc. and who is commonly mistaken for Arabs and Persians, usually by some stupid westernese or arrogant Aussies.
"hehe so you are a turk eh? mohamed jihad jihad ? hehehe..."
"sorry, don't know arabic, I speak TURKISH, you retard!"