What is the definition or description of: bowel incontinence?

See below: Bowel incontinence is the loss of bowel control, leading to an involuntary passage of stool. This can range from occasionally leaking a small amount of stool and passing gas, to completely losing control of bowel movements. Causes are numerous but include neurological, psychiatric, gynecologic, dietary and traumatic causes. Referral to a colorectal surgeon can determine the cause.

Simple: Inability to control stool or gas until such time that it is socially acceptable is a good definition.