τριάκοντα
Etym. indecl., with a gen. τριηκόντων in Hes.; dat. τριηκόντεσσιν Anth.
I. "thirty", Lat. triginta, Hom., etc.
II. οἱ τριάκοντα,
1. at Sparta, "the council of thirty", assigned to the kings, Xen.
2. at Athens, "the Thirty", commonly called "the thirty tyrants", appointed on the taking of Athens (B C. 404), Plat., etc.