muscles
n. countable A2 Elementary US //ˈməsəɫz// UK //mˈʌsəlz// mus·cles
n. the parts of your body that help you move and stay strong. You use them to lift things, walk, and even breathe.
n. fibrous tissues in the body that have the ability to contract, producing movement or maintaining the position of parts of the body.
He exercises every day to build his muscles.
After running the marathon, her leg muscles felt incredibly tight and sore for several days.
The human body contains over six hundred muscles, ranging from the tiny stapedius in the middle ear to the large gluteus maximus used for walking.
Usage
Usually used in the plural when referring to the general physical strength or the muscular system of a person.