Definition of "bladder" in English

noun

1. (zoology) A flexible sac that can expand and contract and that holds liquids or gases.

2. (anatomy) Specifically, the urinary bladder.

3. (botany) A hollow, inflatable organ of a plant.

4. The inflatable bag inside various balls used in sports, such as footballs and rugby balls.

5. A container in the form of a flexible bag.

   • a fuel bladder

6. (figurative) Anything inflated, empty, or unsound.

verb

1. To swell out like a bladder with air; to inflate.

2. (transitive) To store or put up in bladders.

   • bladdered lard