Written communication (6)
I believe the answer is:
letter
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">written communication</span>' is the definition.<br/ ><span class="explanation-format__explanation">(letter is a kind of written communication)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for letter that I've seen before include "Alphabetic character" , "Unit of alphabet" , "Written message" , "Epistle, missive" , "Character of the alphabet" .)