a river steamboat on which theatrical performances could be given (especially on the Mississippi River)
造句
用作名詞(n.)
An armed man involved in an overnight standoff with police outside the Showboat Casino in Atlantic City has surrendered peacefully. 在大西洋城的一名全副武裝的男子終于向在演戲船娛樂場守侯了一整晚的警方繳械投降。