eight-liner
n.— «Capt. Steven Jett of the Houston Police Department estimates that Houston has 300 to 400 gaming rooms. Inside, one typically finds row after row of video gaming machines, often called “eight-liners” because there are eight ways to win based on the combination of images on the screen.» —“Law enforcement losing big on local gambling” by Carolyn Feibel, Paige Hewitt Houston Chronicle (Texas) Aug. 5, 2007. (source: Double-Tongued Dictionary)