"Signs are potential conveyors of meaning". It's a phrase from one of the linguistic article I've read recently

I think it means "gist", "gist of a speech"

It's confusing. A conveyor of good news (or bad news) is a person who is about to tell another person good (or bad) news. It's a person who passes on information. A conveyor of meaning - confusing. Is it possible to provide the text in which the expression was used?