Definition of ballum rancum in English:

ballum rancum

(also ballum rankum)

noun

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.

Pronunciation

ballum rancum

/ˈbaləm ˌraŋkəm/