catgut

noun

1. a strong cord made by twisting the dried intestines of animals, as sheep, used in stringing musical instruments and tennis rackets, for surgical sutures, etc.
2. goat’s-rue.

noun

1. a strong cord made from the dried intestines of sheep and other animals that is used for stringing certain musical instruments and sports rackets, and, when sterilized, as surgical ligaturesOften shortened to: gut

n.

1590s, altered from kitgut, probably from obsolete kit (n.2) “fiddle” + gut (n.). It was made from the intestines of sheep.

n.

1. A tough, thin cord made from the treated and stretched intestines of certain animals, especially sheep, and used for surgical ligatures.