Midwestern US state (4)
(Other definitions for iowa that I've seen before include "'Hawkeye State'" , "State of USA" , "US state, three vowels" , "US swing electoral state" , "American state, capital Des Moines" .)
'midwestern us state' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for ohio that I've seen before include "US state, joined in 1803" , "The Buckeye State" , "American river" , "US state, capital Columbus" , "Supporting framework" .)
(Other definitions for nebraska that I've seen before include "Find snake bar in this US state" , "State N. of Kansas" , "Mid-western US state" , "US state, capital Lincoln" , "US Great Plains state" .)
(Other definitions for indiana that I've seen before include "Midwestern state" , "state of America" , "-- Jones, Harrison Ford role" , "Vice President Pence's state" , "Part of US" .)