Prime minister? (8)
This clue could be a double definition.
'prime' is the first definition.
(I've seen this before)
'minister?' is the second definition.
The answer and definition can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for cardinal that I've seen before include "Type of number or prelate" , "Most important number" , "of prime importance" , "papal adviser" , "fundamental importance" .)
'prime minister' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for premier that I've seen before include "Foremost" , "First (minister)" , "Prime minister" , "Chief minister" , "PM" .)