Perused (4)
I believe the answer is:
read
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">perused</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 read that I've seen before include "Interpret writing" , "Check, emend (proof)" , "Use a book" , "Run one's eye over" , "Interpret printed matter" .)