finish off
US /ˈfɪn.ɪʃ ɑːf/
UK /ˈfɪn.ɪʃ ɑːf/

1.
terminar, finalizar
to complete the last part of something
:
•
I need to finish off this report before I leave.
Preciso terminar este relatório antes de sair.
•
Let's finish off the remaining work quickly.
Vamos terminar o trabalho restante rapidamente.
2.
matar, acabar com
to kill or destroy someone or something completely
:
•
The disease eventually finished off the old tree.
A doença acabou por matar a árvore velha.
•
One more blow will finish him off.
Mais um golpe o acabará.