diary

/ˈdaɪəri/

/ˈdaɪəri/

Other forms: diaries

Dear diary, you are a written record of things that happen each day. Some people keep a diary while they’re traveling, others keep their secrets in a diary. Either way, keep out!

Some diaries have a pretty cover and a tiny lock with a key, for keeping the contents safe from prying eyes. You can also call such a book a "journal," although traditionally a diary is written in each day, while a journal might have less frequent entries. The word diary comes from the Latin word diarium, "daily allowance," with its root of dies, or "day."

Definitions of diary

1. noun

   a daily written record of (usually personal) experiences and observations
   synonyms: journal

   types:

   blog, web log

   an online journal where people can post entries about their experiences

   type of:

   piece of writing, writing, written material

   the work of a writer; anything expressed in letters of the alphabet (especially when considered from the point of view of style and effect)
2. noun

   a personal journal (as a physical object)
   type of:

   journal

   a record book as a physical object