abdominal muscles
nounUK /æbˈdɒmɪnəl ˈmʌsəlz/
US /æbˈdɑːmɪnəl ˈmʌsəlz/
The muscles in your belly that help you bend and sit up.
Doing sit-ups makes your abdominal muscles stronger.
OTHER MEANINGS
2. The group of muscles forming the front wall of the abdomen.
The abdominal muscles protect the organs inside the belly.
3. A common fitness term for the muscles trained by crunches and planks.
Her workout focuses on the abdominal muscles.
4. The muscles that help the body twist and bend at the waist.
Strong abdominal muscles support the lower back.