Can a NON-living entity communicate?
I don't mean something like a computer, or traffic light, or check engine light that has been obviously programmed by a human.
Also, i don't mean Reaction. Like the way a cloud releases it's rain at a certain point.
And also, I don't mean things like: "diamonds have flaws to TELL YOU where you can spit them."
And lastly, I don't mean Mediums of communication like DNA.
I mean Communication by the definition of the word:
the act of conveying meaningful information,... requiring a sender, a message and a recipient.
Communication as you have defined it here is an action, and it seems to come close to requiring volition and intent. Since non-living entities cannot, or do not yet have volition, they can't send information. Additionally, the word meaningful is significant, particularly as it implies that the act of sending information must have meaning to sender and recipient. Obviously, non-living entities do not attach meanings to information, which again would make it impossible. My guess is that there are some very fine lines drawn on this question in the field of artificial intelligence, but by the terms of your question, I'm going to argue that non-living entities are incapable of sending a message.
It has nothing to communicate. A computer is not alive, but it can run programs written by a living entity. But non-living things can react, i.e wind, volcanoes, etc to outside forces and influences