The fat that covereth the inwards - The omentum, caul or web, as some term it. The fat that is upon the inwards; probably the mesentery or fatty part of the substance which connects the convolutions of the alimentary canal or small intestines.
“The fat that covereth the inwards” refers to the caul or transparent membrane which has upon it a network of fatty tissue: “the fat upon the inwards” refers to the small lumps of suet found upon the intestines of healthy animals.