Stratagem, ruse (4)
I believe the answer is:
ploy
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">stratagem</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that stratagem can be written as ploy)</span><br/ ><br/ >'<span class="explanation-format__original">ruse</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(both can mean a trick or scheme)</span><br/ ><br/ ></span>
(Other definitions for ploy that I've seen before include "'Stratagem, gambit (4)'" , "Trick" , "Device" , "Cunning manoeuvre to gain advantage" , "Clever tactic" .)