the world > existence and causation > existence > intrinsicality or inherence > essence or intrinsic nature > [noun] > vital part or vitalizing influence
pitheOE
sap1526
quicka1566
lifeblood1582
heartstring1584
entelechy1603
heart1603
heart-blood1606
heart and soul1616
heart's-blooda1631
life's bloodc1635
c1635 Witts Triumvirate f. 25 I haue a strange twinkling of my left eye; some call it but Lifes-blood.