noun / verb
muscle
MUS-uhl/ˈmʌsl/
Body tissue that contracts to produce movement.
The biceps muscle contracts to bend the arm at the elbow.
Etymology
The Latin pieces mean “little mouse.” The shape and movement of some muscles, especially the biceps, were thought to resemble mice, turning an animal image into a name for contracting body tissue.
In context
The esophageal muscle then contracts and relaxes in a wavelike movement that propels food and liquids down into the stomach.
More examples
- Regular strength training helps build muscle.
- My leg muscles feel sore after the hike.
- Heart muscle contracts to pump blood through the body.
Forms
muscle · muscles
muscular adjective — relating to or made of muscle
Similar words
- musculature
- Refers to a body's muscles collectively, rather than individual muscles.