Simple Definition of bladder
: the organ in the body that holds urine after it passes through the kidneys and before it leaves the body
: a soft bag (such as the rubber bag inside a football) that is filled with water or air
Origin of bladder
Middle English, from Old English blǣdre; akin to Old High German blātara bladder, Old English blāwan to blow
First Known Use: before 12th century
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