This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. An area or region governed by a chief.

n. A society larger than a tribe but smaller or simpler than a state.

n. Sovereignty.

"Stonehenge is the remnant of a chiefdom, which is what you get with the invention of agriculture: multi-village polity with centralized rule."

fiefdom