Actually I myself was not sure how to define "life". I felt no understanding is complete without consulting the Quran. That's what I did, to take help from Allah. I apologize if you didn't like it.
So even if Miller had been successful in generating some poly-peptides, accidently and randomly, he would never have "caused" them to "multiply" on their own. And even if they could have started multiplying somehow, by some unknown trigger, they could never have become an "intelligent" being. Intelligence in every creations of Allah tells us there is a "Master Mind" behind it.
So life in my opinion is the " 'wisdom' of Allah" blown into all of his creations. Thankyou.