lifeblood
🇺🇸
/ˈlaɪfblʌd/
🇬🇧
/ˈlaɪfblʌd/
the most important thing that supports and helps something to grow and be successful
Education is the lifeblood of any society.
the blood that is needed to keep a person or an animal alive
The lifeblood was flowing from the wound.