Lewis Short
fermentum (noun N) : contr. for fervimentum, from fervo, ferveo
* That which causes fermentation, leaven, yeast, ferment.
* Lit., Plin. 18, 11, 26, § 102; 18, 7, 12, § 68: panis sine fermento,unleavened bread,Cels. 2, 24; 30; Vulg. Levit. 2, 4.
* Transf.
* Trop., anger, passion (poet. and very rare): (uxor) nunc in fermento tota est, ita turget mihi,Plaut. Cas. 2, 5, 17; id. Merc. 5, 3, 3.—Poet. transf., of the cause of anger or vexation: accipe et istud Fermentum tibi habe,Juv. 3, 188.
* A drink made of fermented barley, malt liquor, beer, Verg. G. 3, 380.
Charlton T. Lewis, Charles Short, A Latin Dictionary