Oklahoman city (5)
I believe the answer is:
tulsa
'oklahoman city' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for tulsa that I've seen before include "Twenty-four Hours from - (Gene Pitney)" , "part of Oklahoma" , "An OK place" , "Oklahoma city featured in a 1960s pop song" , "American city" .)