Dance clubs no good in outskirts of Omaha (5)
I believe the answer is:
conga
'dance' is the definition.
(I know that conga is a type of dance)
'clubs no good in outskirts of omaha' is the wordplay.
'clubs' becomes 'c' (abbreviation used in card games such as bridge).
'no good' becomes 'ng' (abbreviation).
'in' means one lot of letters goes inside another.
'outskirts of' suggests removing the centre.
'omaha' with its middle removed is 'oa'.
'ng' going within 'oa' is 'onga'.
'c'+'onga'='CONGA'
(Other definitions for conga that I've seen before include "wiggling line" , "Snaking Latin American dance" , "Lined-up dance" , "Line-dancing" , "Chain dance" .)