Gunner/ˈɡʌnər/ Definition 1 of 3Pro Tip 1/3Military Role Used to describe a military position with expertise in operating heavy weaponry. During the battle, the gunner was crucial in manning the tanks. Pro Tip 2/3Cultural Image In movies and books, gunners are often portrayed as brave and skilled soldiers. The film's hero was the gunner who saved his platoon. Pro Tip 3/3Weapon Association Gunner implies association with larger firearms, not typically small arms or handguns. She trained to be a gunner on military helicopters.