cut the umbilical cord
To end a child's overdependence on or overattachment to their parents.
ADJ
thick, thin | strong | elastic, nylon, silk
gold
She wore a gold cord around her waist to hold up her dress.
dressing-gown, picture | nerve, spinal, vocal | umbilical cord)
QUANT
length, piece
I wrapped a long cord around the boxes to keep them together during moving.
VERB + CORD
pull
knot, tie (sth with)
She tied the cord around the package to keep it secure during shipping.
undo, untie