← 単語を見るに戻るfrontiernoun#8,884訳語境界きょうかい辺境へんきょう新開地しんかいち辺塞へんさい英語の定義a wilderness at the edge of a settled area of a country例文Many families left to make a new life on the frontier.Many families went west to make a new life on the frontier.似ている単語frontiersfrontiersmenfrontiersmanfrontfrontingfronts← spotlightmonte →