sinew
nounUK /ˈsɪnjuː/
US /ˈsɪnjuː/
A sinew is a strong, tough cord in your body that joins a muscle to a bone.
The doctor explained that the sinew in his leg was stretched but not torn.
OTHER MEANINGS
2. Tough fibrous tissue in meat that is hard to chew.
She trimmed the sinew from the steak before cooking it.
3. A source of strength or power, often used in the plural.
The volunteers were the sinews of the rescue effort.
4. Tough cord used for binding or fastening things together.
The arrow was bound with animal sinew.