lifeblood

[ lahyf-bluhd ]
/ ˈlaɪfˌblʌd /

noun

the blood, considered as essential to maintain life: to spill one's lifeblood in war.
a life-giving, vital, or animating element: Agriculture is the lifeblood of the country.

Origin of lifeblood

First recorded in 1580–90; life + blood

Example sentences from the Web for lifeblood

British Dictionary definitions for lifeblood

lifeblood
/ (ˈlaɪfˌblʌd) /

noun

the blood, considered as vital to sustain life
the essential or animating force