网页subject uk / ˈsʌb.dʒekt/ us / ˈsʌb.dʒekt/ C2 noun. a person, thing, or situation that is written about in a book, article, etc. or shown in a picture, etc. The mill by the bridge was the subject of an unfinished painting by J. M. W. Turner. 桥边磨坊是特纳一副未完成油画的主题。.