Drug dealer (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">drug dealer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(someone who sells or pushes drugs)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for pusher that I've seen before include "See 20" , "Street seller of illegal drugs" , "Criminal who sells illegal drugs" , "A seller of drugs on the streets" .)