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English definition of “bubble”

bubble

noun uk   /ˈbʌb.l̩/ us  

bubble noun (AIR BALL)

C1 [C] a ball of gas that appears in a liquid, or a ball formed of air surrounded by liquid that floats in the air: As water begins to boil, bubbles rise to the surface. I love champagne - I think it's the bubbles that make it so nice.Spherical, circular and annular objectsGeometrical shapes

bubble noun (GOOD PERIOD)

[C usually singular] a temporary period of very successful economic performance by a country, often followed by sudden economic failure: Japan's economic bubbleEconomics and the state of the economy

bubble

verb [I] uk   /ˈbʌb.l̩/ us  
C2 to produce bubbles: We could hear the porridge bubbling away (= bubbling strongly) in the pot.Preparing food using heatPreparing food
Phrasal verbs
(Definition of bubble from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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