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

Through one of the most dominant stretches in NFL history, the most steadfast lifeline for the Chiefs has been the prolific and uncanny connection between Patrick Mahomes and Travis Kelce. —Kansas City Star, 15 Sep. 2025

Rather, after Hurricane Sandy knocked out their power, the landline became a lifeline in home. —Stephanie Ganz, Parents, 15 Sep. 2025

At the start of the business, every opportunity looks like a lifeline. —Dmitry Malin, Forbes.com, 15 Sep. 2025

These aren’t switchboard operators but rather true community lifelines. —Jason Truppi, Fortune, 12 Sep. 2025

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