空穴来风 kōngxuéláifēng unfounded Origin Definitions Defs Strokes Stroke Words Sentences Sents 空穴 kōngxué hole empty cave; hole or hollow area来 來 lái verb to come To come; to arrive; to move toward the speaker; to crop up or happen风 風 fēng noun wind wind; the movement of air caused by differences in air pressure