Movable barriers (5)
I believe the answer is:
gates
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">movable barriers</span>' is the definition.<br/ ><span class="explanation-format__explanation">(gate is a kind of movable barrier)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for gates that I've seen before include "philanthropist" , "Entrance (to Microsoft?)" , "One of the founders of Microsoft" , "Rich American" , "Openings" .)