柯林斯詞典afterbirth /?ɑ?ft??b??θ/ 1. N the placenta and fetal membranes expelled from the uterus after the birth of the offspring 胎衣; 分娩以後從子宮脫落的胎磐及胎膜 返回 afterbirth劍橋詞典the material , including the placenta , that is pushed out of a woman's or female animal's body soon after she has given birth 胞衣；胎磐及羊膜 返回 afterbirth