Noun
An indication that someone is alive; vital sign.
(figuratively) An indication that someone is present.
to show sign of life
The city itself swung slowly toward us silent as a dream. No sign of life but puffs of steam from skyscraper chimneys, the motion of the traffic. The mighty towers stood like tombstones in a graveyard, leaning against the sky and waiting for -- for what? Someday we'll know. Edward Abbey
I think through education, belief in God, and good engineering, our children become a lot better at what they're doing than we did, and that starts with the very first sign of life on the face of this earth. Evel Knievel
Not a living thing was to be seen and the cottages that sat huddled close to the ground remained fast shut; the smoke from the chimneys alone still gave a sign of life. Stijn Streuvels
The thing is, the only real sign of life is growth. And growth requires pain. So to choose life is to accept pain. Richard Paul Evans