catgut

noun
  1. A cord made from the dried intestines of sheep, goats, or horses, used for strings of musical instruments and sports equipment.
  2. Usage: Despite the name, catgut does not come from cats.; Largely replaced by synthetic materials in modern use.
  3. A thin cord or string made from catgut, especially as used in violin or tennis racket strings.
  4. Usage: Historical and musical context.

Examples