
1) Ancient people of Russia 2) Circassian tribe
Found on
https://www.crosswordclues.com/clue/zygii

The Zygii (also known as Ζυγοί, Zygoi, Zygi or Zygians) has been described by the ancient Greek intellectual Strabo as a nation to the north of Colchis. He wrote: And on the sea lies the Asiatic side of the Bosporus, or the Syndic territory. After this latter, one comes to the Achaei and the `Zygii` and the Heniochi, and also the Cercetae a.....
Found on
http://en.wikipedia.org/wiki/Zygii
No exact match found.