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1. A hollow globule of gas (e.g., air or carbon dioxide)
    
2. A speculative scheme that depends on unstable factors that the planner cannot control
   "a real estate bubble";
   - house of cards
    
3. An impracticable and illusory idea
   "he didn't want to burst the newcomer's bubble"
    
4. A dome-shaped covering made of transparent glass or plastic

1. Form, produce, or emit bubbles
   "The soup was bubbling"
    
2. Flow in an irregular current with a bubbling noise
   "bubbling brooks";
   - ripple, babble, guggle, burble, gurgle
    
3. Rise in bubbles or as if in bubbles
   "bubble to the surface"
    
4. Cause to form bubbles
   "bubble gas through a liquid"
    
5. Expel gas from the stomach
   - burp [informal], belch, eruct [formal]

Derived forms: bubbling, bubbles, bubbled

See also: spill over

Type of: alter, arise, breathe, change, come up, covering, emit, fancy, fantasy, globule, go, go up, illusion, lift, modify, move up, pass off, phantasy [archaic], rise, scheme, sound, strategy, uprise

Encyclopedia: Bubble, Bubble, Toil And Trouble