门静脉 ménjìngmài portal vein Origin Definitions Defs Strokes Stroke Words Sentences Sents 门 門 mén orifice (anatomy) opening or orifice of the body静脉 靜脈 jìngmài vein A blood vessel that carries blood from parts of the body back to the heart; functions in contrast to the 动脉 dòngmài.