Former mates (4)
I believe the answer is:
exes
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">former mates</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 exes that I've seen before include "old dates" , "Reduced claim from employer" , "divorcees?" , "Expenses (abbrev.)" , "Financial allowances" .)