do in
US /duː ɪn/
UK /duː ɪn/

1.
tuer, liquider
to kill someone
:
•
The gangster threatened to do in anyone who betrayed him.
Le gangster a menacé de tuer quiconque le trahirait.
•
He was afraid the enemy would do him in if they caught him.
Il avait peur que l'ennemi ne le tue s'il l'attrapait.