Old school slang for common folks back in medieval times. Those of low class work in hard labor (agricultural) and spending majority of the time being exposed to the sun; so they tan. Where as the high class folks do nothing, but stay inside their homes; getting paler. So pale that their skin become--as some say like alabaster, that you can see their blue veins through their skin. Thus the word "Blue Blood".
it doesn't matter how hard your dad works, you'll never be a Blue Blood like us.
by cinnamonbon June 24, 2009
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A blue blood, when said in a conversation about college basketball, refers to the historically best programs.

Example Teams:
Kansas
Kentucky
Duke
North Carolina
UCLA
Many say that there aren’t any blue bloods in the 2019 Final Four, which consists of Michigan State, Virginia, Texas Tech, and Auburn.
by ICWeinerz69 April 5, 2019
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family generations who served as law enforcement officers.
my uncles and grandfather were from a blue blood family since 1 was NYPD detective and 2 others were FBI agents
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(law enforcement) is a person who comes from a family in law enforcement and continues in the "family trade". Blue being a reference to "The Thin Blue Line"
Dave can't help it if his career is moving so fast, he's got blue blood.
by jitterz November 24, 2010
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the elite, wealthy,aristocratic.
comes from when the aristocrats used iron cutlery to eat, the exposure to bad quality iron eventually made their blood blue.
normaly refers to english.
by iamnotpete January 15, 2006
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A recently founded secret society at the University of Southern California. It is a group of random rich elitist students. Unlike "Skull and Dagger," the "secret" honor society at USC, no one knows who its members are and how they are chosen. It is a lot like Skull and Bones at Yale except this group isn't well known.
USC student 1: "I wonder if they will pick me to be a part of the Blue Blood Society"

USC student 2: "Doubt it. You're not rich enough"
by sSCs August 11, 2011
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