边缘系统 biānyuánxìtǒng limbic system Origin Definitions Defs Strokes Stroke Words Sentences Sents 边缘 邊緣 biānyuán noun edge edge; fringe; verge; brink; the outer part or boundary of something系统 系統 xìtǒng noun system A whole composed of parts that work together to perform a function or achieve a goal; a series or group of related things forming a complex whole.