Hur'q was the name given by the Klingons to a species from the Gamma Quadrant who invaded Qo'noS in the 14th century CE. They plundered the fledgling Klingon Empire and took with them many artifacts, including the Sword of Kahless. The word hur'q came to mean "outsider" in the Klingon language. (DS9: "Sword of Kahless")