the amniotic membrane enclosing a fetus 胎头羊膜 ■part of this membrane occasionally found on a child's head at birth, thought to bring good luck (出生婴儿头上的)胎头羊膜状东西(据信能带来好运气)
(historical)a woman's close-fitting indoor headdress or hairnet (史)(室内用)女子头饰,发网
(Anatomy)the omentum (剖)网膜
语源
Middle English: perhaps from Old French cale 'head covering', but recorded earlier