life‧line /ˈlaɪflaɪn/
noun [countable]1. something which someone depends on completely
lifeline to
The telephone is her lifeline to the rest of the world.lifeline for
The organization has proved to be a lifeline for thousands of needy families.2. a rope used for saving people in danger, especially at sea
[TahlilGaran] Dictionary of Contemporary English ▲