An indication that someone is alive; vital sign. / (figuratively) An indication that someone is present.

(historical) A stick with a line attached that was fired from a musket to a ship that had foundered.

(slang, informal) With all honesty and seriousness; affirmatively

A blue six-pointed star, outlined with a white border and usually featuring the Rod of Asclepius in the center. The symbol was originally designed and governed by the U.S. National Highway Traffic Safety Administration (NHTSA) under the jurisdiction of the United States Department of Transportation (DOT). It has since become a symbol of the emergency medical services in multiple countries.

plural of triangle of life

Designed to last for a long time, said especially of food and drink

plural of life-source

Anything that is necessary for or that provides something that is necessary for sustaining life.

(historical) A rocket for carrying a line from the shore to a ship in distress.

Any form of life that has self-awareness, and the ability to adapt itself to various environmental conditions