1. a crease on the palm; its length is said by palmists to indicate how long you will live

Definition categories: shape, crease, crinkle, furrow, line, seam, wrinkle

2. support that enables people to survive or to continue doing something (often by providing an essential connection)

- the airlift provided a lifeline for Berlin

- she offered me a lifeline in my time of grief

Definition categories: thought, support

3. line that raises or lowers a deep-sea diver

Definition categories: man–made, line

4. line thrown from a vessel that people can cling to in order to save themselves from drowning

Definition categories: man–made, line