Latin for voice of the people like a colloquialism, or current expressions, street lingo, idiomatic expressions and words.
Can be used metaphorically for commonly understood, the popular person or idea, what everyone knows or accepts, the latest trend.
I admire that candidate for his clear vox populi.
You ever find yourself down in that part of the country, they have their own vox populi, know what I mean?
This new drink is the new vox populi on campus.
You got to get with it, you got to know the latest trends, the newest styles, the vox populi of the crowd if you're going to make it in this town.