中空 zhōngkōng hollow Origin Definitions Defs Strokes Stroke Words Sentences Sents zhōngkōng hollow 中 zhōng locative middle middle; center; within; among; inside a range or period of time空 kōng adjective empty empty; hollow; void of content; containing nothingzhōngkōng medium altitude 中 zhōng locative middle middle; center; within; among; inside a range or period of time空 kōng noun sky (bound form) the sky; outer space; the air