Periodical publication (8)
I believe the answer is:
magazine
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">periodical publication</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for magazine that I've seen before include "Weapons' store" , "Rifle clip" , "Storehouse for ammunition" , "Periodical - weapon store" , "Arsenal" .)