catgut

noun4

1. •
   A cord of great toughness made from the intestines of animals, especially of sheep, used for strings of musical instruments, racquets, sutures etc.

   • Eventually they carved small paddles to strike the ball and refined this implement with a mesh of catgut. — 1971
2. •
   The material from which such cords are made.
3. •
   Tephrosia virginiana (goat's rue, devil's shoestring).
4. •
   A sort of linen or canvas, with wide interstices.