Dictionary
tri•ar•chy
Pronunciation: (trī'är-kē), [key]—
n.,
—pl. -chies.
1. government by three persons.
2. a set of three joint rulers; a triumvirate.
3. a country divided into three governments.
4. a group of three countries or districts, each under its own ruler.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.