Life is relative not a yes or no question. 1 second can show you heaven and hell while a 100 year old's whole life can be as peaceful as the morning. So every second of breath is what you call life and the events that take place are the moments nothing more nothing less. Going through many things doesn't mean you know life it just means you are breathing and going through different probablities and possibilities that shape you into who you are now. So, there is no "one" meaning of life it's just the simple action of breathing that takes us to different possibilities in life so I will say we all know and define life in our own ways.