rum·ba also rhum·ba 
(rŭmbə, rm-, rm-)
(rŭmbə, rm-, rm-)n.
1. A dance of Cuban origin, combining complex footwork with a pronounced movement of the hips.
2. A modern ballroom adaptation of this dance.
3. The music for either of these dances.
[American Spanish, from Spanish rumbo, ship's course, revelry, pomp; see RHUMB.]
rumba v.