Definition of "royal house" []

• Royal persons collectively (noun)

WordNet. Princeton University. 2010.

• "The head of the royal house of Epirus, Arybbas, had no daughters available and had already married his eldest niece himself, but his younger niece was still unmarried."
• "Callisthenes undoubtedly harbored much ill will toward the royal house of Macedonia for obliterating his hometown, but he obliged Alexander with obsequious propaganda until the king had him executed."
• "Achaemenid: The Persian royal house from the region near Persepolis."