What are the powerful queens of kush called?
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What are the queens of kush called in Meroitic when they are sisters of the king?
Kandake kadake kentak
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What are the four powerful queens of kush called by the Greco-Roman world?
"Candaces" Candaces Candace
Category:Women rulers in Africa
https://en.wikipedia.org/wiki/Category%3AWomen%20rulers%20in%20Africa
Candace is a royal title from the Bible, ultimately deriving from the term kandake, a title for a queen or queen mother in the ancient African Kingdom of Kush; also meaning pure and innocent. 
Candace (given name)
Four African queens were known to the Greco-Roman world as the "Candaces": Amanishakheto, Amanirenas, Nawidemak, and Malegereabar.
Kandake
The queens of Kush are called Kandake in Meroitic, a term for the sister of the king of Kush. Four African queens were known to the Greco-Roman world as the "Candaces". "Candaces" is ultimately deriving from the term kandake.