\Bub"ble\, n. [Cf. D. bobbel, Dan. boble, Sw. bubbla. Cf.
{Blob}, n.]
1. A thin film of liquid inflated with air or gas; as, a soap
   bubble; bubbles on the surface of a river.
         Beads of sweat have stood upon thy brow, Like
         bubbles in a late disturbed stream.   --Shak.
2. A small quantity of air or gas within a liquid body; as,
   bubbles rising in champagne or a["e]rated waters.
3. A globule of air, or globular vacuum, in a transparent
   solid; as, bubbles in window glass, or in a lens.
4. A small, hollow, floating bead or globe, formerly used for
   testing the strength of spirits.
5. The globule of air in the spirit tube of a level.
6. 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.
         Then a soldier . . . Seeking the bubble reputation
         Even in the cannon's mouth.           --Shak.
7. A person deceived by an empty project; a gull. [Obs.]
   ``Ganny's a cheat, and I'm a bubble.'' --Prior.

\Bub"ble\, v. i. [imp. & p. p. {Bubbled}; p. pr. & vb. n.
{Bubbling}.] [Cf. D. bobbelen, Dan. boble. See {Bubble}, n.]
1. To rise in bubbles, as liquids when boiling or agitated;
   to contain bubbles.
         The milk that bubbled in the pail.    --Tennyson.
2. To run with a gurgling noise, as if forming bubbles; as, a
   bubbling stream. --Pope.
3. To sing with a gurgling or warbling sound.
         At mine ear Bubbled the nightingale and heeded not.
                                               --Tennyson.