For men only (4)
I believe the answer is:
stag
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">for men only</span>' is the definition.<br/ ><span class="explanation-format__explanation">(as in a stag do)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for stag that I've seen before include "Hart" , "Male at party?" , "in a rut, perhaps?" , "Share speculator" , "Investor" .)