bladder bladder /ˈblædɝ/

noun

1. () The bladder is a hollow muscular organ located in the pelvis that serves as a reservoir for urine. Its primary function is to store urine produced by the kidneys until it is ready to be expelled from the body through the urethra during urination.  ( bladder )
   The bladder is a hollow muscular organ located in the pelvis that serves as a reservoir for urine. Its primary function is to store urine produced by the kidneys until it is ready to be expelled from the body through the urethra during urination.
    The bladder is an organ that stores urine until it can be released from the body
   The bladder is an organ that stores urine until it can be released from the body
   
   
2. A bag that fills with air  ( bladder )
   a bag that fills with air
    The fish uses its bladder to maintain buoyancy in water.
   The fish uses its bladder to maintain buoyancy in water.
   
   
3. A distensible membranous sac (usually containing liquid or gas)  ( bladder , vesica )
   a distensible membranous sac (usually containing liquid or gas)