bladder

n. sac in the body that holds urine (Anatomy)

Bladder may refer to:A bladder is a pouch or other flexible enclosure with waterproof or gasproof wallsUrinary bladder or gallbladder, in anatomyGas bladder, an internal organ that contributes to the ability of a fish to control its buoyancy
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Bladder /blad·der/ 1. a membranous sac, such as one serving as receptacle for a secretion. 2. urinary bladder. [more]Bladder - Community and Resources

Noun
1. a distensible membranous sac (usually containing liquid or gas)
(synonym) vesica
(hypernym) sac
(hyponym) gallbladder
2. a bag that fills with air
(hypernym) bag
(part-holonym) football

n. blister, bubble; pimple; raised bubble on the skin that is filled with pus; raised area just under the top layer of a structure; buble-like structure on a plane or aviation vehicle (e.g. for shooting the guns from a bomber)

v. blister, cause to blister or be affected with blisters