壌土

(1)material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use); "the land had never been plowed"; "good agricultural soil"

(2)（特にその使用価値との関連において）植物が育つところ

(3)the part of the earth's surface consisting of humus and disintegrated rock

(4)腐植土や分解した岩石から成る地表の一部