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catgut cat·gut (kāt'gŭt')
A tough, thin cord made from the treated and stretched intestines of certain animals, especially sheep, and used for surgical ligatures.
tough cord made from the intestines of certain animals, particularly sheep, and used for surgical ligatures and sutures, for the strings of violins and related instruments, and for the strings of tennis rackets and archery bows. The ancient Egyptians and Babylonians and the later Greeks and Romans used the intestines of herbivorous animals for much the same purposes. The origin of the term catgut is obscure; it is not known if the intestines of cats were ever put to such uses.