In the centre of (4)
I believe the answer is:
amid
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">in the centre of</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for amid that I've seen before include "Among" , "'See . . . . the winter's snow' (carol)" , "Maid (anag)" , "Within" , "In the thick of" .)