じばん【地盤】 (1) the foundation;→英和 the ground;→英和 the base.→英和 (2)[選挙の]a constituency;→英和 a sphere of influence.(3)[地歩]a footing;→英和 a position.→英和 〜を固める solidify one's footing.〜を築く lay the foundation;nurse one's constituency.‖地盤沈下 (ground) subsidence.