Here’s one from the front page of the International Herald Tribune … “Arms control talks break past logjam”
Well, I suggest you look up this word in Google Image to get a visual picture of what it means. the “jam” part does not mean something made from fruit and sugar to put on your toast in the morning … It’s more linked to the jam you may know in traffic jam:
stuck, not being able to go anywhere.
And this is something that can happen in negotiations, in discussions. We know lots of examples, don’t we?
Watch out for metaphors … they’re … picturesque.