thalidomide
noun [ U ] uk/θəˈlɪd.ə.maɪd/ us/θəˈlɪd.ə.maɪd/
沙利度胺，酞胺哌啶酮，反应停（原用作镇静药，后发现孕妇服用后对胎儿的四肢发育有害）
a drug that was once used to help people relax or sleep. It was found to cause damage to babies inside the womb, especially by stopping the development of their arms and legs, when it was taken by their mothers.