lifeblood
noun /ˈlaɪfblʌd/
/ˈlaɪfblʌd/
[uncountable]- lifeblood (of something) the thing that keeps something strong and healthy and is necessary for successful development
- Tourism is the lifeblood of the city.
- (literary) a person’s blood, when it is thought of as the thing that is necessary for life
- The wound was draining the lifeblood from him.