Caul

(Heb. yothe'reth; i.e., "something redundant"), the membrane
which covers the upper part of the liver (Ex. 29:13, 22; Lev.
3:4, 10, 15; 4:9; 7:4; marg., "midriff"). In Hos. 13:8 (Heb.
seghor; i.e., "an enclosure") the pericardium, or parts about
the heart, is meant.