The phrase "royal bloodline" refers to a family or lineage that has a long history of kings, queens, or monarchs in their ancestry. It suggests that the person or family is of noble or regal descent. Full definition
ALSO BONUS: Since these are blondies they run in the same royal bloodline as all cookies so they're acceptable for any christmas cookie party, especially if there are awards, you can just cut them smaller so it looks like you made more. (witandvinegar.com)
While Wakanda represents a fulfillment of that longing, Killmonger's royal bloodline remains at odds with his American Blackness. (villagevoice.com)
On uneven pavement, like the kind you get in nearly every state in the U.S. of A., it transmits far too much noise and harshness back into the cabin for the thin royal bloodlines BMW targets with the 7 Series lineup. (automobilemag.com)