2. An operation performed on the wall of the abdomen to make it look better.
3. Surgery that improves the appearance of flabby, stretched-out abdominal (belly) muscles and skin.
It is often called a "tummy tuck" and it can range from a simple "mini-tummy tuck" to a more complicated, extended surgery.
This kind of surgery is not the same as liposuction, another way to remove fat; however, abdominal wall surgery is sometimes combined with liposuction.