Nebraska's largest city (5)
I believe the answer is:
omaha
'nebraska's largest city' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for omaha that I've seen before include "This was old Indian territory" , "American Indian" , "Largest city in Nebraska" , "American-Indians" , "Cotton fabric used for curtains and upholstery" .)