知心 zhīxīn intimate Origin Definitions Defs Strokes Stroke Words Sentences Sents zhīxīn intimate 知 zhī verb to know to know; to be aware of; to realize or sense心 xīn noun mind thought; intellect; the organ of thinkingzhīxīn bosom friend 知 zhī noun intimate friend (bound form) an intimate friend or someone who knows one well心 xīn noun heart the physical organ that pumps blood; refers to the chest area where the heart is located