bubble

A spherically contained volume of air or other gas, especially one made from soapy liquid.

A small spherical cavity in a solid material.

bubbles in window glass, or in a lens

Anything resembling a hollow sphere.

Anything lacking firmness or solidity; a cheat or fraud; an empty project.

Then a soldier […] / Seeking the bubble reputation / Even in the cannon's mouth

A period of intense speculation in a market, causing prices to rise quickly to irrational levels as the metaphorical bubble expands, and then fall even more quickly as the bubble bursts.

real estate bubble

dot-com bubble

To produce bubbles, to rise up in bubbles (such as in foods cooking or liquids boiling).

The laminate is bubbling.

To churn or foment, as if wishing to rise to the surface.

Rage bubbled inside him.

The blood bubbled up to her brain, and made such a sound there, as of boiling waters, that she did not hear the words which Mr. Bradshaw first spoke […]

To rise through a medium or system, similar to the way that bubbles rise in liquid.

The target of this event is the most deeply nested common ancestor of all changes that occurred in the document, and it bubbles up the document tree […]

To cover or spread with bubbles

To delude, dupe, or hoodwink; to cheat.

No, no, friend, I shall never be bubbled out of my religion in hopes only of keeping my place under another government […]

He tells me with great passion that she has bubbled him out of his youth; that she drilled him on to five and fifty [years old], and that he verily believes she will drop him in his old age, if she can find her account in another.