Except (3)
I believe the answer is:
but
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">except</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for but that I've seen before include "However" , "Only; apart from" , "Save" , "Conjunction meaningn on the other hand" , "Only in attribution" .)