Rolls-Royce noun2 •A car made by this manufacturer.‘What is the most expensive car?’ she had once asked Stan. ‘A cad – Cadillac or a Rolls,’ Stan had said, and sometimes Raoul had a Cadillac, sometimes a Rolls-Royce. — 1968 •(informal) Anything that is the best of its type; the best quality product possible. formsRolls Royces · Rolls-Royces