paintballEnglishOxford New American Dictionarypaintball /ˈpāntˌbôl, ˈpeɪntˌbɔl / ▸ noun a game in which participants simulate military combat using air guns to shoot capsules of paint at each other: [as modifier] a paintball gun. ▪ a capsule of paint used in the game of paintball. – DERIVATIVES paintballer ,paintballing