Library patron (6)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">library patron</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for reader that I've seen before include "Interpreter of what is written" , "Times subscriber, perhaps?" , "member of the university" , "Text book -- red ear (anag)" , "Kind of textbook - or its peruser" .)