true knot
n.
An intertwining of a segment of umbilical cord, usually without obstructing circulation, commonly formed by the fetus slipping through a loop of the cord.
Words nearby true knot
true course,
true diverticulum,
true fresco,
true fruit,
true hermaphrodite,
true knot,
true level,
true north,
true pelvis,
true rhyme,
true rib