bladder
🇺🇸
/ˈblædər/
🇬🇧
/ˈblædə(r)/
The part of the body where urine is stored before it is passed out.
He had to go to the doctor because he was having problems with his bladder.
A flexible bag used to hold air or liquid, like the one inside a ball.
The bladder of the football needed to be replaced because it was losing air.