cabbage whiteEnglishOxford New American Dictionarycabbage white /ˈkabij ˌ(h)wīt, ˈkæbɪdʒ ˌ(h)waɪt/ ▸ noun a mainly white butterfly that has caterpillars which are pests of cabbages and related plants. Genus Pieris, family Pieridae: several species, in particular the imported cabbageworm P. rapae.