It used to be someone relentlessly attacking someone unprovoked. It seems to have morphed into including offending someone intentionally or unintentionally with your words. It seems to be headed toward differing points of view can be considered bullying.
I have a parent and a church leader contacting me about "bullying" of a boy. I'm at a loss for what it might be. I don't have any details about it either.
I guess I'll just wait and see.