Lead down the aisle (5)
I believe the answer is:
usher
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lead down the aisle</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for usher that I've seen before include "One conducts people to seats" , "falling house" , "Official doorkeeper or guide" , "Cinema or wedding official" , "pilot" .)