What is Life ?
Life is (noun) 1. the time when you are alive He spent his whole life working on the farm. in early life when you are a child In early life he lived in the country. for life for as long as someone is alive They put him behind bars for life. His pension gives him a comfortable income for life. a matter of life and death a very serious matter Call the hospital immediately – it’s a matter of life and death. not on your life! certainly not! (informal.) Don’t you want to go camping? – Not on your life! I can’t for the life of me understand I can’t understand at all 2. the fact of being a living person to lose your life to die Several lives were lost when the ship sank. saved my life saved me from dying to take your life or own life to kill yourself In a fit of despair she took her life. 3. an experience Life can be hard when you don’t have much money. Being a miner is a hard life. 4. living things Is there life on Mars? there’s no sign of life in the house it looks as though there is no one in it 5. enthusiasm or energy The young actors injected some life into the old play. The film comes to life when she appears on the screen. She’s always full of life. 6. a biography, the written story of someone’s life She has written a life of Henry VIII.
source: Easier English, Student Dictionary Upper Intermediate Level