conga
n//ˈkɑŋɡə//conga, congas, congatrumma, congadans
(musical instrument) A tall, narrow, single-headed Cuban hand drum of African origin.
(dance) A march of Cuban origin in four-four time in which people form a chain, each holding the hips of the person in front of them; in each bar, dancers take three shuffle steps and then kick alternate legs outwards at the beat; the chain weaves around the place and allows new participants to join the back of the chain. [from 1935]