Lewis Short
febrīcŭla (noun F) : dim.id.
* A slight fever (rare but class.): febriculam habere,Cic. Att. 6, 9, 1: in febriculam incidere, Planc. ap. Cic. Fam. 10, 21 fin.—In plur.: lentis febriculis diu detineri,Cels. 2, 17.
Charlton T. Lewis, Charles Short, A Latin Dictionary