The inflatable bag inside various balls used in sports, such as footballs and rugby balls.
A sealed plastic bag that contains wine and is usually packaged in a cask.
A flexible sac that can expand and contract and that holds liquids or gases.
Anything inflated, empty, or unsound.
Specifically, the urinary bladder.
A hollow, inflatable organ of a plant.
To swell out like a bladder with air; to inflate.
To store or put up in bladders.
A balloon-shaped aircraft whose bag is inflated with hot air; it carries passengers and crew in a gondola slung underneath.