1) Blood 2) Exclusively Anglo word 3) Exclusively Saxon word 4) Vital element 5) Vital factor 6) Vital force 7) Word of purely Anglo origin 8) Word with Anglo-Saxon origins Found on https://www.crosswordclues.com/clue/lifeblood
Lifeblood or Life blood can refer to blood, the bodily fluid in animals. It may also refer to: In entertainment: In organizations: ... Found on http://en.wikipedia.org/wiki/Lifeblood
Life'blood` (līf'blŭd`) noun 1. The blood necessary to life; vital blood. Dryden. 2. Fig.: That which gives strength and energy. « Money [ is] the lifeblood of the nation.» Swift. Found on http://www.encyclo.co.uk/webster/L/39