Dance of Cuban origin (8)
'dance of cuban origin' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rumba that I've seen before include "Cuban folk dance" , "Style of dance" , "Ballroom dance of Cuban origin" , "Afro-Cuban or ballroom dance" , "Umbra (anag)" .)
(Other definitions for habanera that I've seen before include "Steps" , "Cuban dance in slow duple time" , "Slow dance of Cuban origin" .)