Cuban ballroom dance (5)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cuban ballroom dance</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for rumba that I've seen before include "What to perform" , "Rhythmic dance of Cuban origin" , "Dance originating in Cuba" , "One from Cuba" , "Afro-Cuban or ballroom dance" .)