Word before "donna" or "ballerina" (5)
I believe the answer is:
prima
I believe this clue is a double definition.
'word before donna' is the first definition.
(I've seen this in another clue)
'ballerina' is the second definition.
(prima ballerina is a kind of ballerina)
(Other definitions for prima that I've seen before include "First" , "Leading" , "in pole position" , "Top diva is a . . . . . donna" .)