epidural
noun [ C ] uk/ˌep.ɪˈdʒʊə.rəl/ us/ˌep.əˈdʊr.əl/
硬膜外麻醉
an anaesthetic (= a substance that stops you feeling pain) that is put into the nerves in a person's lower back with a special needle
They gave my wife an epidural when she was giving birth. 我妻子分娩时，医生给她施行了硬膜外麻醉。