blue blood

1 ENTRIES FOUND:
blue blood noun
plural blue bloods
blue blood
noun
plural blue bloods
Britannica Dictionary definition of BLUE BLOOD
1 
[noncount] : membership in a royal or socially important family
2 
[count] : a member of a royal or socially important family

— blue–blooded

/ˈbluːˈblʌdəd/ adjective [more blue–blooded; most blue–blooded]