Picture card (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">picture card</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that king is a type of picture card)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for king that I've seen before include "Supreme ruler" , "In Christianity, God or Jesus Christ" , "Most important chessman" , "Chess piece" , "and 21 Across: Shakespeare play" .)
(Other definitions for jack that I've seen before include "Dog akin to 9" , "Something for raising < flag on board" , "Jill's companion" , "Car lifter" , "Playing card; sailor" .)