Lifeblood

['laɪfblʌd] or ['laɪf'blʌd]

(noun.) an essential or life-giving force; 'water is the lifeblood of India'.

(noun.) the blood considered as the seat of vitality.

Inputed by Jules--From WordNet

(n.) The blood necessary to life; vital blood.

(n.) Fig.: That which gives strength and energy.

Edited by Cathryn