Ague

имя существительное 1) [медицина] малярия, болотная лихорадка 2) лихорадочный озноб Например: shaking ague — приступ дрожи

Большой англо-русский словарь

Ague

noun Etymology: Middle English, from Anglo-French ague, from Medieval Latin (febris) acuta, literally, sharp fever, from Latin, feminine of acutus sharp — more at acute 1. a fever (as malaria) marked by paroxysms of chills, fever, and sweating that recur at regular intervals 2. a fit of shivering; chillaguish adjective

Merriam-Webster's Collegiate Dictionary