So, according to what you just said here, if a Palestinian shoots up Israelis on the street, I guess to you that isn't terrorism. Or, if one attacks and kills Israelis on the street with a machete, that isn't terrorism either (both have happened, BTW). And since the 9/11 attackers only used box cutters to hijack those planes, they must not have been terrorists, either.
I guess you should call up Websters and have them alter their definition of terrorism to only include attacks with explosives.
Please don't answer...it will spoil my image of you.