柯林斯词典breech /briːtʃ/ (breeches/ˈbriːtʃɪz/) 1. N-COUNT The breech of a gun is the part of the barrel at the back into which you load the bullets. (槍的)後膛 返回 breech剑桥词典If a baby in the womb is in a breech position , it is lying so that the lower part of its body will come out first. （臀位、橫位等）分娩異常的 a breech birth /delivery 臀位分娩 返回 breech