環かん濠ごう集しゅう落らくかんごうしゅうらくMeanings1nounmoated settlement (Yayoi period)Archaeological term for a settlement surrounded by a moat, characteristic of the Yayoi period in Japan.吉野ヶ里遺跡よしのがりいせきは有ゆう名めいな環かん濠ごう集しゅう落らくの一ひとつです。