1. (noun)subject, topic, theme the subjectmatter of a conversation or discussion "he didn't want to discuss that subject"; "it was a very sensitive topic"; "his letters were always on the theme of love"
2. (noun)topic, subject, issue, matter some situation or event that is thought about "he kept drifting off the topic"; "he had been thinking about the subject for several years"; "it is a matter for the police"
Definition of 'topic' 
