1. (

• bubble

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

2. (

• house_of_cards ,
• 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" ;

3. (

• bubble

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

4. (

• bubble

) a dome-shaped covering made of transparent glass or plastic ;

1. (

• bubble

) form, produce, or emit bubbles; "The soup was bubbling" ;

2. (

• ripple ,
• babble ,
• guggle ,
• burble ,
• bubble ,
• gurgle

) flow in an irregular current with a bubbling noise; "babbling brooks" ;

3. (

• bubble

) rise in bubbles or as if in bubbles; "bubble to the surface" ;

4. (

• bubble ,

) cause to form bubbles; "bubble gas through a liquid" ;

5. (

• burp ,
• bubble ,
• belch ,
• eruct

) expel gas from the stomach; "Please don't burp at the table" ;