空

(1)holding or containing nothing; "an empty glass"; "an empty room"; "full of empty seats"; "empty hours"

(2)何も持たないか、含まないさま

(3)having no meaning or direction or purpose; "a meaningless endeavor"; "a meaningless life"; "a verbose but meaningless explanation"

(4)意味、方向または目的がないさま

(1)