I think it means "What provides us with a reason to continue living?" I think Neon Genesis answers this best as the search for meaningful connections with other people, worth pursuing despite a probability of rejection and pain.

“Hard question is not, ‘What is meaning of life?’ That is easy question to answer! No, hard question is what make happiness."

The meaning of life is to survive and reproduce. Any further meaning is defined by the person asking the question.

>>700
The "meaning" part of this question i think is implicitly spiritual in tone and not concerned with biological priorities, or even going meta with it and harnessing the power of stars and entire galaxies. You can quickly imagine these scenarios and then always end up adding a "and then what" to it, or a "that's it?"

We keep coming back to the question of meaning because it's something we can never properly make coherent, we've found a way to speak about our existence that we can't put to words, or we're unsatisfied with any words that could describe it.

>>709
Spiritually, I don't think we were put here for any purpose. The meaning of life is whatever you want it to be. My meaning of my life is to have a good time.

Order that brings disorder.