What Does “Meaning” Mean?

I recently glimpsed an author trying to explain how to have a “meaningful life.”

I always wonder what that means. Humans make meaning. If you want your life to be “meaningful,” that’s up to you.

From a Buddhist perspective, it sounds like attachment. In daily usage, “meaning” means, that I can tell, referentiality. The word “car” refers to a vehicle, usually with four wheels and an internal combustion engine, all of which words in turn refer to components of a “car” that one could point to if one knows the meaning of the words.