A bladder containing (real or fake) blood, used to fake someone's death or injury, as in espionage or confidence tricks where a person is made to think that he is an accessory to murder.

(anatomy) An elastic, muscular sac situated in the pelvic cavity, into which urine from the kidneys is temporarily stored prior to disposal by urination. Urine enters the bladder via the ureters and exits via the urethra.

(anatomy) A pear-shaped organ that stores bile from the liver, until the body needs it for the digestion and absorption of fats in the duodenum.

(idiomatic) An inability to urinate in the presence of others

(anatomy, usually of fish) A gas-filled sac within the bodies of most fish that variously acts as a float, lung, sound-producing organ or an aid to hearing.

plural of shy bladder

Colutea arborescens, a leguminous shrub.

plural of bladder infection

(medicine) A urinary tract infection.

(oncology) A disease in which abnormal cells multiply without control in the bladder.