noun, noun which may take the genitive case particle 'no'
class A; A grade; A rank
Used for top-tier classification in rankings, quality, or categories. Often appears in compounds like Ａ級品 (class-A goods) or Ａ級戦犯 (class-A war criminal).
This restaurant was selected as a class-A gourmet establishment.
He obtained a class-A license.