noun
Refers to the leading female singer in an opera, or by extension a temperamental, demanding person. The extended figurative sense is common in Japanese.
from Italian
彼女はオペラ座のプリマドンナとして有名だ。
She is famous as the prima donna of the opera house.
あの俳優はまるでプリマドンナのよう
That actor is as self-centered as a prima donna.