A thin sphere of liquid enclosing air or another gas. The child blew a bubble with the soapy water and watched it float away.
A small, often temporary, increase in the value of something, especially a financial asset. The housing market experienced a bubble that eventually burst, leading to a recession.
A protective or insular environment that isolates a person or group from reality or external influences. Living in a wealthy neighborhood can create a bubble that shields residents from the struggles faced by others.
A small, round, raised area on a surface, often filled with air or liquid. The paint job was ruined by bubbles that formed as it dried.
A small globule of gas within a liquid, often rising to the surface. Tiny bubbles formed in the soda and tickled her nose as they burst.