cast off
US /kæst ˈɔːf/
UK /kæst ˈɔːf/

1.
deshacerse de, desechar
to get rid of something or someone that is no longer wanted or needed
:
•
The snake cast off its old skin.
La serpiente se desprendió de su vieja piel.
•
They cast off their old beliefs and embraced new ideas.
Se despojaron de sus viejas creencias y abrazaron nuevas ideas.
2.
zarpar, desamarrar
to untie a boat from its moorings and set sail
:
•
The crew prepared to cast off at dawn.
La tripulación se preparó para zarpar al amanecer.
•
Once the lines were clear, they cast off from the dock.
Una vez que las amarras estuvieron libres, zarparon del muelle.