Definition from Wiktionary, the free dictionary
Alternative forms 
- quinsey (obsolete)
- IPA: /ˈkwɪnzi/
quinsy (plural quinsies)
- (pathology) 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.
- 1891: He'd had the quinsy and swollen glands when he was young, he told me, and it had left him with a weak throat, and a hesitating, whispering fashion of speech. — Arthur Conan Doyle, ‘A Case Of Identity’ (Norton 2005 p.85)
painful pus-filled inflammation or abcess of the tonsils and surrounding tissues