bubble
1. [ noun ] a hollow globule of gas (e.g., air or carbon dioxide)
Related terms: globule foam air_bubble soap_bubble ripple
2. [ verb ] form produce, or emit bubbles, as of liquids or gases
Examples:

"The soup was bubbling"

Related terms: emit foam bubble_over
3. [ verb ] flow in an irregular current with a bubbling noise, as of water
Synonyms: ripple burble guggle gurgle babble
Examples:

"babbling brooks"

Related terms: go gurgle ripple gurgle
4. [ noun ] a dome-shaped covering made of transparent glass or plastic
Related terms: covering
5. [ noun ] an impracticable and illusory idea
Examples:

"he didn't want to burst the newcomer's bubble"

Related terms: illusion
6. [ noun ] a speculative scheme that depends on unstable factors that the planner cannot control
Synonyms: house_of_cards
Examples:

"his proposal was nothing but a house of cards" "a real estate bubble"

Related terms: scheme
7. [ verb ] expel gas from the stomach
Synonyms: belch eruct burp
Examples:

"In China it is polite to burp at the table"

Related terms: emit belch
Similar spelling:   bubbly
  bobble
  babble
  bbl