Having two barrels, especially referring to a firearm with two parallel barrels. He carried a double-barreled shotgun during the hunting trip.
Having two parts, aspects, or purposes; dual or combined in nature. The proposal had a double-barreled approach, addressing both education and healthcare.
Describing a surname or title that consists of two joined names linked by a hyphen. She chose to keep her double-barreled surname after the divorce.