Cultivating new land; clearing and reclaiming uncultivated land for agriculture or other use.
入植者たちは森を切り開き、土地を開墾した。
The settlers cut down the forest and reclaimed the land for cultivation.
江戸時代には新田開発や開墾が盛んに行われた。
During the Edo period, developing new rice fields and land reclamation were actively carried out.