i Register
In some senses, diary is marked as obsolete, British. Watch for register when choosing this word.
noun
A daily log of experiences, especially those of the writer.
They kept separate diaries. His was on paper and her diary was on her computer's hard drive.
No, I’m just going over the stuff Tara wrote in my diary. She’s writing your diary? Could you be any lazier?
A personal organizer or appointment diary.
It is recommended that teachers and pupils are issued with homework diaries to help implement and monitor the homework timetable.
verb
To keep a diary or journal.
As part of her mindful movement practise, diarying is important to Sarah. "It gives me a chance to see what is going on, to reflect on my experience."
adj
Lasting for one day.
the offer of a usurpation, though it were but as a diary ague