paintballEnglishOxford Dictionary of Englishpaintball /ˈpeɪntbɔːl / ▸ noun [mass noun] a game in which participants simulate military combat using airguns to shoot capsules of paint at each other: [as modifier] a paintball gun. ▪ [count noun] a capsule of paint used in paintball. – DERIVATIVES paintballer /ˈpeɪntbɔːlə / noun paintballing /ˈpeɪntbɔːlɪŋ / noun