Diary (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">diary</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that diary can be written as journal)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for journal that I've seen before include "Daily written record" , "Magazine; diary" , "Personal record" , "Newspaper - diary" , "Periodical" .)
(Other definitions for planner that I've seen before include "One making advance arrangements" , "Whole-year calendar" , "Council worker" , "One making proposal" , "diary, perhaps" .)
(Another definition for daybook that I've seen is " Ledger for recording transactions as they occur".)