noun
Etymology: round (II)
1. : a fibrous cord resulting from the obliteration of the umbilical vein of the fetus and passing from the umbilicus to the notch in the anterior border of the liver and along the under surface of that organ
2. : either of a pair of rounded cords arising from each side of the uterus and traceable through the inguinal canal to the tissue of the labia majora into which they merge
3. : a triangular ligament of the hip joint implanted by its apex into a depression near the middle of the head of the femur and by its broad base into the margins of the cotyloid notch of the innominate bone