() (NAmE usuallyˈdatebook) ( apˈpointment book, BrE, NAmE ) a book with spaces for each day of the year in which you write down things you have to do; an electronic device or program that you use in the same way 记事簿；电子记事簿；电子记事软件◆My diary is full until June. 我的日程到六月份都排满了。◆Can you find space in your diary (= do you have time) for a meeting on the 23rd? 你能否抽空参加 23 日的会议？➡organizer ➡ see note at calendar ⨁to make a note of sth / put sth / write sth in a diary 在日程中记录某事；将某事记入日程；将某事写入日程⨁a desk / an electronic / a pocket diary 枱式／电子／袖珍记事簿
a book in which you can write down the events that occur each day 日记本◆I kept a diary of the project (= wrote down what happened each day). 我为这项目写日记。