BUBBLE

I. noun Usage: often attributive Etymology: Middle English bobel Date: 14th century a small globule typically hollow and light: as, a small body of gas within a liquid, a thin film of liquid inflated with air or gas, a globule in a transparent solid, something (as a plastic or inflatable structure) that is hemispherical or semicylindrical, 2. something that lacks firmness, solidity, or reality, a delusive scheme, a sound like that of bubbling, magnetic ~ , a state of booming economic activity (as in a stock market) that often ends in a sudden collapse, the condition of being at risk of exclusion or replacement (as from a tournament), II. verb (~d; bubbling) Date: 15th century intransitive verb 1. to form or produce ~s, to rise in or as if in ~s, to flow with a gurgling sound , 3. to become lively or effervescent , to speak in a lively and fluent manner, transitive verb to utter (as words) effervescently, to cause to ~