fornācŭla, ae, f. dim. [fornax], a little furnace or oven.
I Lit., Juv. 10, 82; Vitr. 7, 10, 1; Front. Ep. ad M. Caes. 1, 2 ed. Mai. —*
II Trop., a kindler , exciter : hic totius calumniae fornacula, Ap. Mag. p. 321, 32.
fornācula ae, f dim.fornax, a small oven, little furnace , Iu. ...
An Elementary Latin Dictionary