blue blood

• POS: Noun Phrase

CIDE DICTIONARY

blue blood, n. 

•  a member of the nobility or aristocracy, or a person of high social status.  [1913 Webster]
•  the quality of status that qualifies one as a blue blood; -- used metaphorically, as “They have blue blood in their veins.”.  [PJC]

THESAURUS

blue blood

Brahman, ancestry, archduke, aristocracy, aristocrat, aristocraticalness, armiger, baron, baronet, birth, blood, carnage, count, daimio, distinction, duke, earl, elite, esquire, flower, genteelness, gentility, gentleman, gentry, grand duke, grandee, hidalgo, honorable descent, lace-curtain, laird, landgrave, lord, lordling, magnate, magnifico, margrave, marquis, nobility, noble, noble birth, nobleman, nobleness, optimate, palsgrave, patrician, peer, quality, rank, royalty, seigneur, seignior, silk-stocking, society, squire, swell, thoroughbred, upper class, upper-cruster, viscount, waldgrave