Caul (headgear)
WordNet
noun
(1) The inner membrane of embryos in higher vertebrates (especially when covering the head at birth)
(2) Part of the peritoneum attached to the stomach and to the colon and covering the intestines
WiktionaryText
Noun
- The thin membrane which covers the lower intestines.
- Part of the amniotic sac which sometimes shrouds a baby’s head at birth.
- A style of close-fitting circular cap worn by women in the 16th century and later, often made of linen. http://www.elizabethancostume.net/headwear/caulmake.html