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blue bloodalso blue·blood (blo͞o′blŭd′)
1. Noble or aristocratic descent.
2. A member of the aristocracy.
[Translation of Spanish sangre azul : sangre, blood + azul, blue (probably from the visible veins of fair-complexioned aristocrats).]
blue′-blood′ed (-blŭd′ĭd) adj.
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|Adj.||1.||blue-blooded - belonging to or characteristic of the nobility or aristocracy; "an aristocratic family"; "aristocratic Bostonians"; "aristocratic government"; "a blue family"; "blue blood"; "the blue-blooded aristocracy"; "of gentle blood"; "patrician landholders of the American South"; "aristocratic bearing"; "aristocratic features"; "patrician tastes"|
noble - of or belonging to or constituting the hereditary aristocracy especially as derived from feudal times; "of noble birth"