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 aërated
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.
In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 
