Noun
A cord of great toughness made from the intestines of animals, esp. of sheep, used for strings of musical instruments, etc.
A sort of linen or canvas, with wide interstices.
Source: Webster's dictionaryDifferent harps may use strings of catgut or nylon, or of metal, or some combination. Source: Internet
Squash racket and ball Racquetball racket and ball A racket or racquet is a sports implement consisting of a handled frame with an open hoop across which a network of strings or catgut is stretched tightly. Source: Internet
These instruments typically used catgut and other materials, including silk, for their strings. Source: Internet