
1) Ancient tribe in the Balkans 2) Thracian tribe
Found on
https://www.crosswordclues.com/clue/bistones

Bistones (`Βίστονες`) is the name of a Thracian people who dwelt between Mount Rhodopé and the Aegean Sea, beside Lake Bistonis, near Abdera. From the worship of Dionysus in Thrace, female Bacchanals were sometimes called Bistonides, just as in some Latin poems, Edonis (from another Thracian tribe, the Edoni) refers to female Bacchanals.....
Found on
http://en.wikipedia.org/wiki/Bistones
No exact match found.