lifeline

noun

life·​line ˈlīf-ˌlīn 

1

: a line (such as a rope) used for saving or preserving life: such as

a

: a line along the outer edge of the deck of a boat or ship

b

: a line used to keep contact with a person (such as a diver or astronaut) in a dangerous or potentially dangerous situation

2

: something regarded as indispensable for the maintaining or protection of life

Examples of lifeline in a Sentence

The river is the town's lifeline.

The new jobs were an economic lifeline for a city in need of help.

The radio was their lifeline to the outside world.

They threw a lifeline to the man overboard.

Recent Examples on the Web

Building up a man whose appetite, whose isolation, whose just general hunger to dominate, making that character and then giving him this one lifeline to humanity in Vanessa — that’s all calculated. —Tracy Brown, Los Angeles Times, 6 May 2026

At least one airline has offered a lifeline for passengers holding elite status in the Free Spirit program. —Scott Laird, Travel + Leisure, 4 May 2026

Now, Leger is working on a lifeline to fund the Southside pool lifeguards. —Steve Large, CBS News, 4 May 2026

Hormones are also a lifeline for women who have uncomfortable-to-debilitating conditions such as endometriosis and premenstrual dysphoric disorder, as well as a range of autoimmune disorders that have nothing to do with reproduction. —Andréa Becker, The Atlantic, 3 May 2026

Word History

First Known Use

1700, in the meaning defined at sense 1

Rhymes for lifeline

• acridine
• alkaline
• andesine
• anodyne
• anticline
• arginine
• asinine
• atropine
• benzidine
• borderline
• byzantine
• calamine

Kids Definition

lifeline

noun

life·​line ˈlī-ˌflīn 

1

: a line persons may hang on to for safety or rescue

2

: something providing help or support that is needed for success or survival