bubble 2023.03.13 Meaning of bubble in English Noun US /ˈbʌbəl/ UK /ˈbʌbᵊl/ 1. a thin, small ball of air in a liquid The teapot is at the bubble. Verb US /ˈbʌbəl/ UK /ˈbʌbᵊl/ 1. produce bubbles The water began to bubble in the kettle.