Dictionary

blue blood

noun

: membership in a royal or socially important family

: a member of a royal or socially important family

Full Definition of BLUE BLOOD

1
\ˈblü-ˈbləd\ :  membership in a noble or socially prominent family
2
\-ˌbləd\ :  a member of a noble or socially prominent family
blue–blood·ed \-ˈblə-dəd\ adjective
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First Known Use of BLUE BLOOD

1832

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