City west of Tulsa (4)
I believe the answer is:
enid
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">city west of tulsa</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 enid that I've seen before include "Writer of children's books, d. 1968" , "W - - Blyton" , "Geraint's loved one" , "Lady" , "Woman" .)