n :  either of two chief superficial veins of the leg:  a  :  one originating in the foot and passing up the medial side of the leg and through the saphenous opening to join the femoral vein - called also great saphenous vein , ong saphenous vein   b  :  one originating similarly and passing up the back of the leg to join the popliteal vein at the knee - called also short saphenous vein , mall saphenous vein  .
 
 
 
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