convulsion
noun [ C usually plural ] uk/kənˈvʌl.ʃən/ us/kənˈvʌl.ʃən/
惊厥;抽搐，痉挛
a sudden movement of the muscles in your body that you cannot control, caused by illness or drugs
She went into convulsions and had to be rushed to hospital. 她全身抽搐，被迅速送到医院。
Idiom
be in convulsionsidiom informal 笑得前仰后合
to be laughing in a way that you cannot control