Emily Dickinson Lexicon

CAUL, n. [L. caula, a fold, from the root of hold. See Hold.]

1. In anatomy, a membrane in the abdomen, covering the greatest part of the lower intestines, called from its structure, reticulum, a net, but more generally, the omentum; also, a little membrane sometimes encompassing the head of a child when born. – Encyc.
2. A kind of net in which females inclose their hair; the hinder part of a cap. – Dryden.
3. Any kind of net. – Grew.