A political movement that uses terror as a weapon to achieve its goals (noun)
WordNet. Princeton University. 2010.
Use "terrorist group" in a sentence
"The same charge of providing their own services to a terrorist group would also be the undoing of a group of Yemeni-Americans living in upstate New York who traveled to Afghanistan on something of a jihad vacation in 2001."
"One way of measuring the pain that the drone program had inflicted on al-Qaeda was the number of audio-and videotapes that the terrorist group had released through its propaganda arm, Al Sahab."
"So, even building the simple gun-type nuclear device of the kind that was dropped on Hiroshima would be extraordinarily difficult for a terrorist group because of the problem of accumulating sufficient quantities of HEU."