BLADDER

noun a distended, membranaceous pericarp.

2. bladder ·noun anything inflated, empty, or unsound.

3. bladder ·vt to put up in bladders; as, bladdered lard.

4. bladder ·vt to swell out like a bladder with air; to inflate.

5. bladder ·noun any vesicle or blister, especially if filled with air, or a thin, watery fluid.

6. bladder ·noun a bag or sac in animals, which serves as the receptacle of some fluid; as, the urinary bladder; the gall bladder;

— applied especially to the urinary bladder, either within the animal, or when taken out and inflated with air.