knock off
US /nɑːk ɑːf/
UK /nɑːk ɑːf/

1.
to stop working, especially at the end of the day
:
•
Let's knock off early today and go for a drink.
•
I usually knock off around 5 PM.
2.
to produce a copy of something quickly and cheaply, often illegally
:
•
They tried to knock off the popular designer bags.
•
The factory was accused of knocking off branded goods.
3.
to kill someone
:
•
The gangster threatened to knock off anyone who betrayed him.
•
He was hired to knock off the rival boss.