The term "pelvic floor" refers to the group of muscles that form a sling or hammock across the opening of the pelvis. These muscles, together with their surrounding tissues, keep all of the pelvic organs in place so that the organs function correctly. A "pelvic floor disorder," then, is a problem with these muscles or the surrounding tissues that leads to dysfunction of one or more of the pelvic organs.
Sources
National Institute of Child Health and Human Development - Pelvic Floor Disorders
