Etymology From Latin diārium (“a daily allowance for soldiers, in Late Latin also ‘diary’”), neuter of *diārius, from diēs (“a day”) (whence also journal). Cognate with Spanish diario (“daily; diary”).
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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?2005 January 30, Jef Biederman, “Feng Shui Is Like So Passe”, in Totally Spies!: Undercover, season 3, episode 19, spoken by Alexandra “Alex” (Andrea Baker as Clover and Katie Griffin), Marathon Media, via Teletoon:
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Both halves feature lyrics that are so teen-girly they sound like they were written in pink ink in a padlocked diary with hearts and frowny faces for punctuation.2016 March 24, Darryl Sterdan, “ZAYN’s ‘Mind of Mine’ and Gwen Stefani’s ‘This is What the Truth Feels Like’ top this week’s new music”, in The Toronto Star, archived from the original on 17 Jun 2018:
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Canada, UK 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.2004, Victoria Kidwell, Homework, page 29:
Etymology From Latin diārium (“a daily allowance for soldiers, in Late Latin also ‘diary’”), neuter of *diārius, from diēs (“a day”) (whence also journal). Cognate with Spanish diario (“daily; diary”).
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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."2015, Hugh O'Donovan, Mindful Walking: