空洞

(1)any large dark enclosed space; "his eyes were dark caverns"

(2)暗く閉じた大きな空間

(3)a depression hollowed out of solid matter

(4)固体をくりぬいたくぼみ

(5)space that is surrounded by something

(6)何かに囲まれた空間

(7)a large cave or a large chamber in a cave

(8)大きな洞窟あるいは洞窟の中の部屋

(9)a cavity or space in something; "hunger had caused the hollows in their cheeks"

(10)ものの空洞、または空間

(11)(anatomy) a natural hollow or sinus within the body

(12)身体内の自然のくぼみまたは洞

(13)a geological formation consisting of an underground enclosure with access from the surface of the ground or from the sea

(14)地面の表面、または海からのアクセスのある地下の囲い地から成る地層