The stomachal muscle is more commonly known as the abdominal muscle. It is a muscle group located in the abdominal area that provides support for the torso and helps with movements such as bending, twisting, and turning. Other synonyms for this muscle group include the abs, core muscles, and six-pack muscles. These synonyms are often used in fitness and exercise contexts, as the abdominal muscles are a primary target for many workout routines. Additionally, the term "stomachal" is less commonly used than the other synonyms, and may be unfamiliar to many people.