First, it needs to be borne in mind that Sunni Islam is wholly dependent on the various rulings (ahkam) of the so-called four schools of jurisprudence (al-madhahib al-arba’). I am currently reading an Arabic manual called Al-Tarbiya al-Jihadiya fi Daw’ al-Kitab wa al-Sunna (“The Jihadi Upbringing in Light of the Koran and Sunna”), written by one Sheikh Abd al-Aziz bin Nasir al-Jalil. After closely examining the word “jihad,” he concludes that “jihad is when Muslims wage war on infidels, after having called on them to embrace Islam or at least pay tribute [jizya] and live in submission, and then they refuse.”
The book also contains terse summaries of the word “jihad” from each of the four schools of jurisprudence, which have the final say as to how Islam — or in this case, jihad — is articulated: According to the Hanafis, jihad is “extreme and strenuous warfare in the path of Allah, with one’s life, wealth, and tongue — a call to the true religion [Islam] and war to whoever refuses to accept it”; according to the Malikis, jihad is “when a Muslim fights an infidel in order that Allah’s word [Sharia] reigns supreme”; according to the Shafi’is, jihad is “fiercely fighting infidels”; and, according to the austere Hanbalis, it is “fighting infidels.” (Note: “infidels,” or kuffar, simply means non-Muslims.)
In short, the “traditional” meaning of jihad is offensive warfare to spread Islamic hegemony — period. This is doctrinally, textually, historically, and consensually demonstrable. At any rate, who probably better understands what jihad means, the non-Muslim Jeffrey Vordermark or the Muslim Abd al-Aziz bin Nasir al-Jalil? More to the point, whose definition will Muslims actually take seriously?