diary

US /ˈdaɪr.i/
UK /ˈdaɪr.i/
"diary" picture
1.

a book with blank pages for recording appointments or keeping a daily record of events and experiences.

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She writes in her diary every night before bed.
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I keep a diary to track my daily tasks and appointments.
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journallogbooknotebookmemoirchronicle
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keep a diary