如数家珍 rúshǔjiāzhēn to know very well Origin Definitions Defs Strokes Stroke Words Sentences Sents 如 rú preposition to be like to be like; to be similar to; as if数 數 shǔ verb to count to count; to calculate; to enumerate or list one by one家珍 jiāzhēn family treasure family heirloom; treasures or valuable items kept in a household