Definition of «huge lifesaver»

The phrase "huge lifesaver" means something or someone that saves or helps a lot in a very important or critical situation.

It's too dang hot to turn on the oven right now, but I can see this being a huge lifesaver come the cooler fall weather. (mymontanakitchen.com)
It was such a huge lifesaver to have them home for at least their first two years of life. (twiniversity.com)
La Leche League has been a huge lifesaver. (breastfeedingtoday-llli.org)
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