Church ceremony (7)
I believe the answer is:
service
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">church ceremony</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for service that I've seen before include "Act of assistance; ceremony" , "navy, for example" , "Armed force - assistance" , "tree" , "duty" .)