Bubble

A thin film of liquid inflated with air or gas; as, a soap bubble; bubbles on the surface of a river.

A small quantity of air or gas within a liquid body; as, bubbles rising in champagne or aerated waters.

A globule of air, or globular vacuum, in a transparent solid; as, bubbles in window glass, or in a lens.

A small, hollow, floating bead or globe, formerly used for testing the strength of spirits.

The globule of air in the spirit tube of a level.

Anything that wants firmness or solidity; that which is more specious than real; a false show; a cheat or fraud; a delusive scheme; an empty project; a dishonest speculation; as, the South Sea bubble.

A person deceived by an empty project; a gull.

To rise in bubbles, as liquids when boiling or agitated; to contain bubbles.

To run with a gurgling noise, as if forming bubbles; as, a bubbling stream.

To sing with a gurgling or warbling sound.