cauliflower 2023.03.13 Meaning of cauliflower in English Noun US /ˈkɑləˌflaʊər/ UK /ˈkɒlɪflaʊə/ 1. a large vegetable with a large flower head of small white flower buds and surrounded by green leaves Cauliflower comes in four different colors: white, orange, purple and green.