The bladder is defined as a bag in the body to hold urine, or something resembling this bag.(noun)
An example of the bladder is the part of the body that feels full when one needs to urinate.
See bladder in Webster's New World College Dictionary
Origin: ME bladre < OE blæddre < IE *bhlē-: see blast
See bladder in American Heritage Dictionary 4
Origin: Middle English bladdre
Origin: , from Old English blǣdre; see bhlē- in Indo-European roots.
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