a life-saver

someone or something that gives you a lot of help when you are in a very difficult situation When you're stuck in traffic like this, a mobile phone's an absolute life-saver.

Common Names:

Name	Pronounced	Usage
Mandy	['mændi]
İSkender	-	Turkish
Brett	BRET	English
Bledsoe	['bledsəu]
Achaicus	-	Biblical, Biblical Latin
DÁNjal	-	Faroese