Definitions

1. noun

a means of support or relief in a difficult or emergency situation

“The doctor’s diagnosis was a lifeline for the patient, who had been suffering from a chronic illness for years.”

2. noun

a telephone cable or other underwater cable that carries signals over long distances

“The lifeline was damaged during the underwater excavation, and the repair team had to act quickly to restore communication.”

3. verb

to provide support or relief to someone in a difficult or emergency situation

“The rescue team had to lifeline the stranded hikers, who were unable to climb down the steep mountain.”