Balloon
Balloon is a rubber sac. It is inflated with air and then sealed at its neck. It is generally produced in bright colour because it is either used as decoration, or as children's toy. Anything resembling a balloon is also called a balloon.A hot-air balloon is also simply referred to as balloon. It is a large bag which is filled with hot air or gas to make it rise in the air. A basket is attached to it to carry passengers.
A large rounded drinking glass in which brandy or other drinks are served is also called a balloon.
It is also a rounded outline drawn on paper, typically in comic strips or cartoon, in which texts are written.