bloquer

/blɔ.ke/
1.
verbInf1stPres

to block, obstruct or stop (movement, access, an operation)

to block (someone) on social media or to lock an account

Je vais le bloquer sur Instagram parce qu'il m'envoie trop de messages.

I'm going to block him on Instagram because he's sending me too many messages.

2.
verbInf1stPres

to get stuck or jam (mechanically)

to freeze up or be unable to proceed (mentally)

Je risque de bloquer sur cet exercice si je ne demande pas d'aide.

I'm likely to get stuck on this exercise if I don't ask for help.