lifesaver

life·sav·er

noun \ˈlīf-ˌsā-vər\

: something that saves a person's life

: something or someone which provides help that is badly needed

Full Definition of LIFESAVER

1

:  one trained to save lives of drowning persons

2

:  one that is at once timely and effective in time of distress or need

Examples of LIFESAVER

1. a surgical procedure that has been a lifesaver for many people
2. This multipurpose tool can be a real lifesaver when something needs fixing.
3. Frozen dinners can be lifesavers for busy parents.
4. Thanks so much for offering to help. You're a real lifesaver!

First Known Use of LIFESAVER

1887

Rhymes with LIFESAVER

disfavor, engraver, enslaver, face-saver, flag-waver, new waver, screen saver, time-saver, white slaver