Set of cards (4)
I believe the answer is:
pack
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">set of cards</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 pack that I've seen before include "Members of rugby scrum" , "Fill luggage - wolves" , "Container; hounds" , "Group of scouts" , "Stow" .)