1N-COUNT 腳注 A footnote is a note at the bottom of a page in a book which provides more detailed information about something that is mentioned on that page. 腳注
2N-COUNT 補充;補充的信息 If you refer to what you are saying as a footnote, you mean that you are adding some information that is related to what has just been mentioned. 補充;補充的信息
As a footnote, I should add that there was one point on which his bravado was more than justified.
我補充一句,他有時表現得過分逞強。
3N-COUNT 無關緊要的事;次要事件 If you describe an event as a footnote, you mean that it is fairly unimportant although it will probably be remembered. 無關緊要的事;次要事件
I'm afraid that his name will now become a footnote in history.