défoncer

/de.fɔ̃.se/
1.
verbInf1st

to smash in; to break down; to destroy (physically)

Il a défoncé la porte pour entrer.

He smashed the door in to get inside.

2.
verbInf1st

to beat up; to thrash; (fig.) to defeat decisively

Ils nous ont défoncés au match hier.

They crushed us in the match yesterday.

3.
verbInf1st

(pronominal) to get high/on drugs; to get very intoxicated

On va se défoncer à la soirée.

We're going to get wasted/get high at the party.