Passage between seats (5)
I believe the answer is:
aisle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">passage between seats</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for aisle that I've seen before include "Church walkway" , "Passage down the side of a church nave" , "Passage between rows of seats" , "The way to get married in church?" , "channel" .)