Funds; letter (7)
I believe the answer is:
capital
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">funds</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">letter</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for capital that I've seen before include "It's terrific in the big city" , "Money available to produce interest" , "It's excellent in the big city" , "source of profit" , "Finances" .)