Regular customer (6)
I believe the answer is:
patron
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">regular customer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for patron that I've seen before include "Saint" , "manager (13) [FRENCH]" , "One gives financial or other support, to an artist say" , "one of the regular customers" , "Sponsor or backer as of the arts" .)