noun which may take the genitive case particle 'no', noun
top-class; first-rate; elite
Emphasizes being at the very highest level, beyond ordinary first-class. Often used attributively with の to modify nouns like 企業, 選手, 技術.
See also: 一流
彼は超一流のピアニストだ。
He is a top-class pianist.
このホテルは超一流のサービスを提供している。
This hotel provides first-rate service.