Doing time? (6)
I believe the answer is:
inside
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">doing time?</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 inside that I've seen before include "Jailed" , "Privileged" , "undercover" , "Not external, perhaps in prison" , "A sort of job" .)