F / fornācātor
noun

fornācātor

gen. fornācātōris · gender masculine · decl. 3rd
(FVRNACATOR in an inscr. found at Pompeii, v. Rosin. Dissert. Isag. p. 66, tab. 10, no. 2)
the heater of a bath-furnace; a bath-heater
id., the heater of a bath-furnace, a bath-heater, Dig. 33, 7, 14.