core muscles
nounUK /kɔː ˈmʌsəlz/
US /kɔːr ˈmʌsəlz/
The strong muscles in the middle of your body that help you stand and move.
Doing planks makes your core muscles stronger.
OTHER MEANINGS
2. The muscles around your belly and lower back that keep your body steady.
Good core muscles help you sit up straight.
3. The group of muscles in your torso that support your spine.
Lifting with strong core muscles protects your back.
4. The central muscles you use for balance and twisting.
Dancers need strong core muscles to spin smoothly.