class A noun 1adjective 1forms 1 noun1 •(UK, slang) Any illicit drug (e.g. cocaine, heroin) categorised as “class A” under the United Kingdom's Misuse of Drugs Act (1971).Finally! If only you'd been supplying the people of Margate with arabica beans instead of dodgy class As. — 2024 adjective1 •Synonym of first class (“best or top”).Surely no child from a good home would become what I have termed a class A fool! — 2012 formsclass As
