bubble

Noun

• a dome-shaped covering made of transparent glass or plastic

• an impracticable and illusory idea
  • he didn't want to burst the newcomer's bubble
    

• a speculative scheme that depends on unstable factors that the planner cannot control
  • his proposal was nothing but a house of cards
    
  • a real estate bubble
    

• a hollow globule of gas (e.g., air or carbon dioxide)

Verb

• expel gas from the stomach
  • In China it is polite to burp at the table
    

• cause to form bubbles
  • bubble gas through a liquid
    

• rise in bubbles or as if in bubbles
  • bubble to the surface
    

• flow in an irregular current with a bubbling noise
  • babbling brooks
    

• form, produce, or emit bubbles
  • The soup was bubbling
    

Related words

• Synonyms: 
  house of cards , burp , belch , eruct , ripple , babble , guggle , burble , gurgle