Dictionary definition · bubble
noun
- a hollow globule of gas (e.g., air or carbon dioxide)
- a speculative scheme that depends on unstable factors that the planner cannot control"his proposal was nothing but a house of cards"
- an impracticable and illusory idea"he didn't want to burst the newcomer's bubble"
- a dome-shaped covering made of transparent glass or plastic
verb
- form, produce, or emit bubbles"The soup was bubbling"
- flow in an irregular current with a bubbling noise"babbling brooks"
- rise in bubbles or as if in bubbles"bubble to the surface"
- cause to form bubbles"bubble gas through a liquid"
- expel gas from the stomach"Please don't burp at the table"
Source: Open English WordNet (CC BY 4.0).