bouchon

As in bouchon de quatre km dirrecion sud. Heard it on the radio and avoided it on the road, now that is a listening test. Kind of feel like bouchon must have other meanings too and it does; e.g. Tout ce qui obstrue un orifice, un conduit : Un bouchon de cérumen. Also reminds me of bouche as in mouth, related?

So, how do you say it? bouchon on forvo