noun
(also ballum rankum)
historical An erotic dance performed (typically naked) by a number of prostitutes with or for a group of (prospective) clients.
Origin
Late 17th century; earliest use found in John Dryden (1631–1700), poet, playwright, and critic. Probably from ball + -um + rank + -um, after Latin nouns with this ending.
Are You Learning English? Here Are Our Top English Tips