a membrane (= thin tissue) that surrounds a foetus inside its mother, and that covers the head of some babies when they are born

It was said that babies born in a caul were born to great fame or great misfortune. 有说法称出生时罩着胎膜的婴儿，日后要么名声大噪，要么厄运连连。

a membrane (= thin tissue) that covers the inside of an animal's stomach

Caul can be used as a protective wrapping for meatballs and pâté. 动物的胃膜可用作肉丸和肉酱的保护性包装。

a type of head covering worn by women in the past