Video shows what quinsy means. A painful pus-filled inflammation or abscess of the tonsils and surrounding tissues, usually a complication of tonsillitis, caused by bacterial infection and often accompanied by fever.. quinsy synonyms: peritonsillar abscess, squinancy, squinzey. Quinsy Meaning. How to pronounce, definition audio dictionary. How to say quinsy. Powered by MaryTTS, Wiktionary