He decided to sue the restaurant after getting food poisoning that put him in the hospital for a week.

sue 是动词，意思是"起诉、控告"，指通过法律程序向法院提出诉讼要求赔偿或追究责任。这个词源自拉丁语 sequi（跟随），在法律语境中引申为"寻求法律救济"的意思。