From Longman Dictionary of Contemporary Englishhigh priestˌhigh ˈpriest noun [countable] 1 AFAMOUS informal someone who is famous for being the best at a type of art, music etc, and whose ideas or work change the way that other people think about and make art, music etchigh priest of the high priest of modern jazz2 RRthe most important priest in some religions
Examples from the Corpus
high priest• For millions of Nepali Hindus the brahmins are high priest and local butcher.• In the next scene they could be the high priest.• Incorrigible to the last, the high priest of scandal has even turned his worst moment into a punch-line.• Age hasn't mellowed the high priest of punk, Iggy Pop.• That, to the high priest of the sanctuary of Shiloh, is not the most important item of news. 