lifeline
//ˈlaɪfˌlaɪn//
Noun
lifelineSingular
lifelinesPlural
1
A rope or line used to rescue someone in danger, especially at sea.
The sailor threw a lifeline to the man who had fallen overboard.
2
Something or someone that provides essential support or help in a difficult situation.
For many elderly people living alone, the daily phone call from a volunteer is their lifeline.
3
A line on the palm of the hand believed to indicate the length or quality of a person's life.
The fortune teller said my lifeline is long and deep.