diary

Meanings

1. 1
   noun

   A book in which you write down what happens to you each day and your private thoughts.

   My roommate found my diary and read it without my permission.

2. 2
   noun

   A book or app for noting appointments and things to do.

   Let me check my diary to see if I'm free on Friday.

3. 3
   verb

   To write regularly in a diary or journal.

   She has been diarying every evening since the new year.

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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