Perusing (7)
I believe the answer is:
reading
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">perusing</span>' is the definition.<br/ ><span class="explanation-format__explanation">(to peruse something is to read it carefully)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for reading that I've seen before include "to which Wilde was committed?" , "Passage" , "Study of books etc" , "Understanding the written word" , "Very elementary subject" .)