plancher

/plɑ̃.ʃe/
1.
nounmasculineSing

floor

flooring (the boards or surface forming a floor)

Il faut que je nettoie le plancher du salon.

I need to clean the living room floor.

2.
verb1st

to work on (a task or project)

to study or think hard about something; to work through/discuss

On va plancher sur ce projet toute la nuit.

We're going to work on this project all night.