Wiktionary
witches' sabbaths
n. (plural of witches' Sabbath English)
Usage examples of "witches' sabbaths".
He knew that she would not name others she saw at witches' sabbaths because there were never any such conclaves, and all such denunciations had to be extracted through whatever torture the law would allow.
After another lapse of years, a woman of strangely exotic beauty appears in society, drives her husband to horror and death, causes an artist to paint unthinkable paintings of Witches' Sabbaths, creates an epidemic of suicide among the men of her acquaintance, and is finally discovered to be a frequenter of the lowest dens of vice in London, where even the most callous degenerates are shocked at her enormities.
Back in those days, Witches' Sabbaths were the primeval form of nightclub.