Ex-GI
I believe the answer is:
vet
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ex-gi</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 vet that I've seen before include "A small animal doctor" , "'Animal doctor, in short (3)'" , "Critically examine" , "Check someone for suitability" , "Dog doc?" .)