catgut
/ˈkætˌɡʌt/noun
High School
1
A cord of great toughness made from the intestines of animals, especially of sheep, used for strings of musical instruments, racquets, sutures etc.
2
The material from which such cords are made.
3
A sort of linen or canvas, with wide interstices.
4
Tephrosia virginiana (goat's rue, devil's shoestring).