n.
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
3.an impracticable and illusory idea
4.a dome-shaped covering made of transparent glass or plastic bubble v.
1.form, produce, or emit bubbles
2.flow in an irregular current with a bubbling noise
3.expel gas from the stomach