From Coriolanus:
"they should be ready to march against the Volscians, with the politic
design of preventing intestine broils by employment abroad, and in the
hope, that when rich..."

I have never before seen "intestine" used this way, but see dictionary definition:
intestine
adj.
5L intestinus, inward, internal < intus, within, akin to Gr entos < IE *entos < base *en, in6 internal, with regard to a country or community; domestic; civil
n.
5L intestinum, neut. sing. of intestinus6 [usually pl.] the lower part of the alimentary canal, extending from the stomach to the anus and consisting of the small intestine and the large intestine; bowel(s): food passes from the stomach into the small intestine for further digestion