Topeka's state (6)
I believe the answer is:
kansas
'topeka's state' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for kansas that I've seen before include "Central US state" , "seen about in region round Topeka" , "Dorothy and Toto lived here on a farm" , "State north of Oklahoma" , "State of central USA" .)