I think a number of the example answers are mystifying meaning. In my view, meaning is simply the answer to the question “why is life worth living?”. It is thus a very personal thing, what is meaningful for one mind may be utterly meaningless to another.
Yet as we are all humans, some significant overlap in the sorts of things that provide a sense of reason or gladness to being alive exists.
I will quote my favorite song, “The Riddle” by Five for Fighting, which gives two answers: “there’s a reason for the world, you and I” and “there’s a reason for the world, who am I?”
I think these capture the two most common sources of meaning for people. Our interactions, love and care for others is one major aspect of what, for many, makes life worth living. And the other is looking inside oneself, finding the things you cherish for their own sake and the moments of flow and joy you are able to find in the world.